Pit crew members push Kyle Larson’s (42) Chevrolet to technical inspection before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal) @bleblancphoto
The car of Timmy Hill (51) is pushed into the garage before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
U.S. Air Force F-15 and F-22 fighter jets from Nellis Air Force Base perform a flyover before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
Brad Keselowski (2) and Martin Truex Jr. (78) circle the track before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
Fans take their seats before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
Race cars line pit row before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
Kurt Busch (41) enters his car before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
Dale Earnhardt Jr. (88) greets fans before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
Kurt Busch (41) on pit row before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
Kurt Busch (41) on pit row before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
Kurt Busch (41) rides in the back of a pickup truck before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
Kurt Busch’s (41) car is seen on pit row before the start of the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
Fans crowd pit row before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal)
People gather during USAF Enlistment Ceremony before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017.
(Bridget Bennett /Las Vegas Review-Journal)
Kurt Busch (41) is introduced before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Bridget Bennett /Las Vegas Review-Journal)
Kurt Busch greets Las Vegas Mayor Carolyn Goodman during USAF Enlistment Ceremony before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017.
(Bridget Bennett /Las Vegas Review-Journal)
Derrike Cope (55) signs autographs for Aydan Saunders, 12, of El Paso, Texas before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017(Chitose Suzuki /Las Vegas Review-Journal)
Kyle Busch (18) holds his son Owen as he signs autographs for Tyler Pistoia of Sonoma, Calf. before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chitose Suzuki /Las Vegas Review-Journal)
Danica Patrick (10), left, is introduced before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017, as Las Vegas Mayor Carolyn Goodman looks on. (Bridget Bennett /Las Vegas Review-Journal)
Fans watch from the top of a trailer before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Miranda Alam/Las Vegas Review-Journal) @miranda_alam
Fans watch from the top of a trailer before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Miranda Alam/Las Vegas Review-Journal) @miranda_alam
Crew members work on the car of Dale Earnhardt Jr. (88) before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas in Las Vegas, Sunday, March 12, 2017. (Bridget Bennett /Las Vegas Review-Journal)
Cars wait to go through tech inspection before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas in Las Vegas, Sunday, March 12, 2017. (Bridget Bennett /Las Vegas Review-Journal)
Fans watch as cars are pushed to technical inspections prior to the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Bridget Bennett/Las Vegas Review-Journal) @bridgetkbennett
Martin Truex Jr. (78) car is pushed into technical inspection prior to the start of Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Bridget Bennett/Las Vegas Review-Journal) @bridgetkbennett
Martin Truex Jr.’s (78) team waits with his car for inspection prior to the start of the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Bridget Bennett/Las Vegas Review-Journal) @bridgetkbennett
Crew members push the car of Brad Keselowski (2) during tech inspection before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas in Las Vegas, Sunday, March 12, 2017. (Bridget Bennett /Las Vegas Review-Journal)
Fans watch as Dale Earnhardt Jr.’s (88) car is worked on prior to start of the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Bridget Bennett/Las Vegas Review-Journal) @bridgetkbennett
Dale Earnhardt Jr.’s (88) car is worked on prior to the start of the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Bridget Bennett/Las Vegas Review-Journal) @bridgetkbennett
Clint Bowyer’s (14) car is pushed into technical inspection prior to the start of Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Bridget Bennett/Las Vegas Review-Journal) @bridgetkbennett
Trevor Bayne’s (6) car is worked on prior to the start of Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Bridget Bennett/Las Vegas Review-Journal) @bridgetkbennett
Fans watch as Dale Earnhardt Jr.’s (88) car is worked on prior to the start of Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Bridget Bennett/Las Vegas Review-Journal) @bridgetkbennett
Crew members work on the car of Dale Earnhardt Jr. (88) before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas in Las Vegas, Sunday, March 12, 2017. (Bridget Bennett /Las Vegas Review-Journal)
Cars wait to go through tech inspection before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas in Las Vegas, Sunday, March 12, 2017. (Bridget Bennett /Las Vegas Review-Journal)
Francis, left, and Roxanne Samascott watch festivities from a balcony before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal) @bleblancphoto
Pit crew members put the final touches on Trevor Bayne’s (6) car before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal) @bleblancphoto
Kurt Busch’s (41) helmet sits on his car in during the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal) @bleblancphoto
Fans line a balcony to watch action in the garage area before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal) @bleblancphoto
Fans watch Erik Jones’ (77) car as it heads into technical inspection before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal) @bleblancphoto
Aric Almirola (43) heads to the drivers meeting before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal) @bleblancphoto
Pit crew members push Jimmie Johnson’s (48) Chevrolet to technical inspection before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, March 12, 2017. (Brett Le Blanc/Las Vegas Review-Journal) @bleblancphoto
Crew members work on the car of Dale Earnhardt Jr. (88) before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Miranda Alam/Las Vegas Review-Journal)
Amy Schams from Lacrosse, Wis. shows off her Jimmie Johnson (48) hat before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Miranda Alam/Las Vegas Review-Journal)
Crew members push the car of Paul Menard (27) before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
Crew members push the car of Ty Dillon (13) before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
The car of Matt Kenseth (20) is inspected before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
The car of Danica Patrick (10) leaves the inspection area before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
Fans gather at Neon Garage before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
Fans gather at the garage of Jimmie Johnson (48) at Neon Garage before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
Fans gather at the garage of Joey Logano (22) and Kyle Busch (18) at Neon Garage before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
Fans gather before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
Fans reflect off the overhead glass at Neon Garage before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Chase Stevens/Las Vegas Review-Journal)
Kyle Busch (18) is introduced before the Monster Energy NASCAR Cup Series Kobalt 400 auto race at Las Vegas Motor Speedway in Las Vegas, Sunday, March 12, 2017. (Bridget Bennett /Las Vegas Review-Journal)
Here’s what was happening at the Las Vegas Motor Speedway ahead of the Kobalt 400 race on Sunday. The Kobalt 400 is NASCAR’s third stop in the 2017 Monster Energy Cup Series.