Why not start by closing down MCRD (400 acres right next to the airport) and moving recruit training to Camp Pendleton. Camp Pendleton is 125,000 acres and contrary to what military officials will tell you I believe there is room to move MCRD there. They already do 1-2 weeks of recruit training at Pendleton – mostly the rifle range, field training and Crucible. A new 500 acre training area would still leave 124,500 acres, and if you include the practically empty Naval Weapons Station Fallbrook there is even more room.