How many sr-71 planes were ever built?

How many tons does a fighter jet weigh? What is the max speed of an f16 b aircraft? What does ac130 stand for? Have they made Zug and Zendrill yet the Battle Force 5 vehicle with figure? Which fighter aircraft can stand still in air? What is the terrain in Kashgar? In A380 wing tail is present but in military aircraft like Eurofighter Typhoon you cant see separately the horizontal stabilizer. where is it if not how is pitching done? What do you call a cadet with no rank? You are leasing a Truck your husband is deployed to Iraq the payment was a month late Can they repo it? What force makes a car move forward? What is utility vs normal aircraft? How much does a helicopter weigh? What tanks were used by the allies in World War 2? How many presidents have used air-force one? What Lockheed Martin plane of the 1950s had six engines? Where was the helicopter rotor made? How much does a dauntless dive bomber cost? How did the A 10 Thunderbolt get the nickname Warthog? What is a predator missile? Does idling work in tf2?