Reagan Test Range occupies one of the most strategically significant pieces of real estate in the entire U.S. military testing enterprise. Located at Kwajalein Atoll in the Marshall Islands in the central Pacific Ocean, the range provides the Department of War with a vast ocean expanse over which long-range ballistic missiles, reentry vehicles, and increasingly hypersonic systems can be tracked from launch to impact. The distance from the continental United States to Kwajalein — roughly 2,500 miles southwest of Hawaii — gives the range the geographic depth needed to observe missiles across the full arc of their flight, something no continental test facility can replicate at scale.