federal agency tier list:
S Tier: Parks Service, Postal Service
A Tier: NASA
B Tier: GAO, HUD, BLM
C Tier: FDA, USPTO
D Tier: DHS, DoD
F Tier: FBI, CIA, NSA
Luckily you have USCG covered at the same tier regardless of where they sit unless they stopped with that "we're DHS during peace and DoD during war" bullshit