I can speak to this a bit personally as my fiance works for DynCorp doing a similar job as an Administrative worker. She's worked in the position for half the amount of time as me (about a year and a half compared to 3 years).
She's currently making around $5,000 a year more than me, she gains .75 hours less vacation time than me a pay period, and has similar retirement and health care benefits. She only gets 6 of the federal holidays off.
Additionally she's set to get another promotion here and raise shortly it seems like (from what her boss told her) which would raise that amount higher.
Compared to the starting point for both of us?
She made $10,000 more, had similar health and retirement benefits, and gained 1.25 hours of vacation time more than me.
I don't know if I can speak to higher ups, but your average government drone compared to the private sector definitely is on the lower end of the pay scale.