Helicopter Bell AH-1Z Viper Serial Register 168526 used by US Marine Corps USMC. Aircraft history and location Aircraft History 168526 US Marine Corps USMC Feb16 HMLA-267 /UV-40 HMLA-267 2016-06-10 A KNXP as HMLA-267 /UV-40 in close air support training at Twentynine Palms, CA HMLA-267 Calling for Back Up: Close-Air Support Send Updates Use APP to upload photo @ (optional) When Now? / / Send