Because the 767 AWACS is interoperable with the E-3 AWACS fleet now in service, the program offers the U.S. and its allies a means to strengthen areas of regional instability through country-to-country cooperation, while at the same time reinforcing the surveillance capabilities of individual nations. The 767-200 provides several advantages over the 707. Its wide-body configuration offers 50 percent more floor space and nearly twice the volume of the 707. The 767 can carry a heavier payload, has a greater range and flies higher than the 707. The two-person flight crew and high-reliability twin engines also provide economic advantages.