Air Force Aerospace Maintenance(2A531)?

Hi! I just recently joined the Air Force and signed my job contract for a Crew Chief in Airlift/Special Misson Maintenance - C-20/21/22/37/40/E4/VC25" for 4 years. I know the general run around of what this job is all about. But I'm just wanting to hear from someone that has done this job before or any aircraft maintenance in the Air Force, and would like to know about your entire experience in this career field. As in the day to day lifestyle, camaraderie, the ups and downs to it and etc. I leave December 1st for BMT and your answer would really help me shed some light on this. If your going to a seer please explain as much as you can and thouroughly, I'll greatly appreciate it!