Cpl. Douglas Gray, an avionics technician from the

Cpl. Douglas Gray, an avionics technician from the 203rd Vertical Marine Attack Squadron in Cherry Point, N.C., carries a blivet, an external cargo pod from a U.S. Marine Corps AV-8B Harrier II on the flight line of the Kentucky Air National Guard Base in Louisville. The Harriers are flying in this weekend's six-hour Thunder Over Louisville air show April 21.