Military:

Suffolk, VA (Mon-Thur):  BDU / ACU / Cammies / Flight Suit / Khakis
Washington, DC (Fri):  Class A and Class B/C as appropriate / Khaki, USCG:  Tropical Blue Long

Civilians:

Suffolk, VA (Mon-Thur):  business casual (dockers and open collared shirt)
Washington, DC (Fri):  business suit