Complete the following sentence: Operation High Dive (also known as Project High Dive) was a secret project carried out during the 1950s by the United States Air Force. It tested high altitude parachutes using anthropomorphic dummies.<unk> It tested high altitude parachutes using anthropomorphic dummies.<unk> It tested high altitude parachutes using anthropomorphic dummies. <unk> <unk> <unk> <unk> Further investigations on this led to Project Excelsior. •••••••••••••••••••••••••••••••••••••
Roswell Incident.