Heat. There’s been plenty of it to go around in Arizona these first days of summer -- literally and politically -- after the air conditioning went out at a dog kennel. Sheriff’s deputies found 20 dead dogs piled up in a shed on Friday at Green Acres Dog Boarding Facility in Gilbert. The public shock over their deaths led a U.S. senator to issue a public apology Monday. As fate would have it, Republican Sen. Jeff Flake’s son, Austin, was minding the kennel, when the dogs died.