Cpl. Michael Greenberg, a collision investigator at Marine Corps Base Quantico, who is certified by the Department of Defense, trains on the Total Station, which is used to capture detailed measurements of a collision scene, Oct. 7. - Cpl. Michael Greenberg, a collision investigator at Marine Corps Base Quantico, who is certified by the Department of Defense, trains on the Total Station, which is used to capture detailed measurements of a collision scene, Oct. 7.