Never

The B-2 has participated in three wars since entering service. On March 24, 1999, two B-2s took off from Whiteman Air Force Base. After 30 hours of continuous flight and two aerial refuelings, they dropped 32 908-kilogram joint direct attack munitions on targets in Yugoslavia. This is B-2 -2 bombers participated in actual combat for the first time. Throughout the Kosovo War, 6 B-2***s flew 45 sorties and dropped 656 joint direct attack munitions on important targets in Yugoslavia. The B-2's flight dispatches were less than 1% of the total aircraft dispatches in the war. 1%, but the amount of bombs dropped reached 11% of the total amount of bombs dropped. Nearly 33% of Yugoslavia targets were destroyed. The US military's B-2 stealth bombers dropped bombs in the Afghan War. In the first three days of the war, ***6 B-2s took off from the mainland, passed through the Pacific, Southeast Asia and the Indian Ocean, carried out air strikes on Afghanistan, and then landed on Dee Island. It set a new record of 44 hours of continuous combat flight and dropped 96 joint direct attack munitions.

In the Iraq War, the B-2 aircraft flew 49 sorties. Among them, 27 sorties used the local Whiteman as the take-off and landing base, flew across the Atlantic route, and carried out long-distance operations, with a flight time of about 35 hours. The other 22 sorties were carried out from a forward base as a take-off and landing base, and carried out precise strikes on Iraq's command, control, communication and other facilities.