US postal workers say agency's productivity tracking and inconsistent training is life-threatening amid extreme heat

• USPS workers are battling life-threatening summer heat.
• Postal workers and their union leaders say productivity tracking on hot days is making the threat worse.
• Union leaders are also investigating reports of managers inaccurately recording heat safety trainings.

Everything is hotter in Texas right now.

The state is facing some of the most extreme heat in its recorded history. So when a letter carrier for the US Postal Service reported to work in rural Texas recently, his supervisor offered a grim reminder.