Related Clues:

• ''This is only __''
• Bomb trial, in old headlines
• Tie __ tie
• 'This is only ___ . . .'
• Take -- (react to applause)
• Bikini atoll event
• Explosive trial, briefly
• Defense initiative, for short
• 'Take ___' ('Congratulations!')
• "This is only ___"
• Alamogordo experiment
• ''This is only ___!''
• Bikini event
• 1940s Bikini blast, in brief
• ''This is ___'' (radio broadcast line)