Exhibitgoers watch the U.S. Army helicopters during the 2018 International Helicopter Industry Exhibition at the Las Vegas Convention Center on Tuesday, Feb. 27, 2018, in Las Vegas. (Bizuayehu Tes …

Exhibitgoers watch the U.S. Army helicopters during the 2018 International Helicopter Industry Exhibition at the Las Vegas Convention Center on Tuesday, Feb. 27, 2018, in Las Vegas. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye