Answer: abombs

AnswerCrossword Clue
ABOMBS20th century phenomena.
ABOMBSTest subjects of the '40s
ABOMBSPowerful weapons, for short
ABOMBSFat Man and Little Boy, for two
ABOMBSW.W. II enders, for short
ABOMBSW.W. II blast makers
ABOMBSCauses of Bikini blasts
ABOMBSMushroom producers
ABOMBSNukes
ABOMBSDestroyers, in brief
ABOMBSThey cause blowups
ABOMBS"Fat Man" and "Little Boy" of 1945
ABOMBSNevada Flats test items
ABOMBSWeapons
ABOMBSTerrible facts of life.
ABOMBSWWII WMDs
ABOMBSMushroom cloud producers
ABOMBSFission gear?
ABOMBSPowerful weapons
ABOMBSLos Alamos projects
ABOMBSLos Alamos test subjects, informally
ABOMBSThey fell on Japan
ABOMBSMushroom makers, briefly
ABOMBSFallout producers
ABOMBSFat Man and Little Boy
ABOMBSSubj. of Cold War tests
ABOMBSWWII enders
ABOMBSFat Man and Little Boy, e.g.
ABOMBSMushroom makers