Program assistant Janett Rice, from left, guides volunteers Linda Martin and Teri Engel at the Clark County Museum in Henderson, Tuesday, Feb. 13, 2018. Volunteers signed up to help access artifacts from the Oct. 1 shooting memorial into a permanent collection at the museum. On Tuesday they specifically catalogued artifacts left at the crosses of Las Vegas residents Quinton Robbins and fallen Officer Charleston Hartfield. Rachel Aston Las Vegas Review-Journal @rookie__rae