Related Clues:

• Bomb letters in cartoons
• Detonation cause
• Leveling initials
• Dynamite component, briefly
• Letters that explode
• ''Drama, Period'' channel
• ''Gone with the Wind'' launched it in '88
• ___ equivalent (measure of explosive energy)
• 'N.B.A. on ___'
• Big bang cause, and an informal hint to 17-, 23-, 47- and 57-Across
• Onetime Dodge S.U.V
• This stuff can be a blast
• Possible blowup cause
• Dragster's fuel, briefly
• "Falling Skies" network