Keywords: US Navy 030317-D-3645W-057 U.S. Navy reservists assigned to Naval Construction Force Support Unit Three and Naval Mobile Construction Battalion Twenty Four (NMCB-24) fire the MK-19 40mm grenade launcher during MIL-EX 2003.jpg en Camp Shelby Miss Mar 17 2003 -- U S Navy reservists assigned to Naval Construction Force Support Unit Three and Naval Mobile Construction Battalion Twenty Four NMCB-24 fire the MK-19 40mm grenade launcher during MIL-EX 2003 The two-week long exercise is conducted by the 20th Seabee Readiness Group Naval Construction Battalion Center Gulfport Miss and is designed to qualify reserve Seabee forces in various combat skill sets U S Navy photo by Tom Witham RELEASED 2003-03-17 030317-D-3645W-057 Navy http //www navy mil/view_image asp id 5285 U S Navy photo by Tom Witham PD-USGov-Military-Navy Camp Shelby Mk 19 grenade launcher Naval Mobile Construction Battalion 24 Taken with Nikon D1X |