Fort Bliss provides the largest contiguous tract ( 1500 sqmi ) of restricted airspace 2012 Sustainable Ranges Report, Appendix C: Maps and Inventory of Ranges, Range Complexes, Military Training Routes, and Special Use Areas in the Continental United States, used for missile and artillery training and testing, and at 992,000 acres boasts the largest maneuver area (ahead of the National Training Center, which has 642,000 acres).