Karla Comfort had her son, 20-year-old Lance Cpl. John M. Holmason, and nine other Marines with F Company, 2nd Battalion, 7th Marine Regiment, 1st Marine Division, painted on a 2006 Hummer H3. The Marines were all killed by the same improvised explosive devise blast in Fallujah, Iraq, in December. Comfort visited Camp Pendleton and displayed the rolling memorial March 2. The custom paintjob, which was done by artist Robert Powell with AirbrushGuy & Co. in Benton, Ark., and took 250 man-hours to complete, was a way for Comfort to pay tribute to her son and keep his memory alive.