New large US Army amphibious cargo supply vehicle called "BARC" on beach at Ft. Lawton near Seattle, WA

"BARC" ("Barge, Amphibious Resupply, Cargo", later known as LARC-LX for "Lighter, Amphibious Resupply, Cargo") driving across beach towards group of people / initials "TRADS" on side of BARC / two shots of officers and other people standing on BARC, examining it / CU hand holding up shot card / officers and other people walking off BARC and standing in front of it / three officers and two officials standing next to BARC two officers shaking hands / BARC moving along through water, men standing on it / BARC and smaller amphibious vehicle next to it moving through water towards beach / two shots of BARC and smaller amphibious vehicle moving across beach after landing / BARC and smaller amphibious vehicle parked on beach / close shot of BARC driving past camera / close shot of propellers at stern of BARC spinning / BARC and smaller amphibious vehicle driving across beach / Note: exact month/day not known