Related Clues:

• Cold war threat
• Big bang maker
• The first one went off in 1952
• It was tested on Bikini, 1954
• Bikini blast
• Nuclear threat
• SALT subject
• Big bang maker, and it's no theory
• Explosive development of 1951
• Cold War concern
• Mushroom cloud maker
• Big boomer
• Weapon
• Cold War weapon
• Blast maker, informally