Historical clue formulations

• Putting on the heat? — 2022-06-19
• Activating, as a security system — 2018-07-26
• Giving heat? — 2017-11-30
• Giving heat? — 2016-12-11
• Prewar activity — 1999-10-15
• Outfitting, as a posse — 1999-09-29