Sir Trainees

The heavy boots issued to airmen at basic training. The name coming from how trainees are required to report to MTIs, "Sir, trainee last name reports as ordered". Usually replaced with third party light weight boots as soon as possible, Sir Trainees are the easiest way to spot a new guy fresh out of Lackland.

Airmen 1: "Check it out. I just got some new Nike boots to replace the shitty issued ones"
Airmen 2: "Lucky bastard. I blew all my money on booze and a new Camaro so I'm still rocking my Sir Trainees"