May 10, 2022 Redesigned birdchaser sleds at Holloman test track saves time, money The 846th Test Squadron, a unit of Arnold Engineering Development Complex, has deployed a new design for the birdchaser sleds used at the Holloman High Speed Test Track, or HHSTT, on Holloman Air Force Base, New Mexico.The birdchaser sleds, used to mitigate bird and animal strikes during HHSTT test