The B61 is a type of nuclear bomb developed by the United States during the Cold War. It is designed for versatility, allowing it to be used in various military scenarios. The bomb can be delivered by different aircraft, including B-2 Spirit and F-15E Strike Eagle, and has multiple yield options, ranging from low to high explosive power. Since its introduction in the 1960s, the B61 has undergone several modifications and upgrades. It remains a key component of the U.S. nuclear arsenal and is also deployed by some NATO allies, reflecting its importance in nuclear deterrence strategies.