Yeah, it's weird how quickly it has changed.
We pulled gate guard, KP etc when I was in. I left the military in March 1998. Did my final out in Germany and went to South Africa. Came back to Europe later that year and popped by the post to say hello to my buddies. I was shocked to see that there were civilian guards on the gates.
What troubles me a little bit (even if it's a bit far fetched) is that if this trend continues, you might see a day at some point in the future when combat units themselves are companies contracted to do the job. Now, that's a bit extreme but I could easily imagine contractors taking on lots of other roles that have traditionally been done by military personnel. Things like supply clerks, mechanics, medics. This could go to the point where it was just the 'trigger pullers' who were in the military.
THAT has already happened in most of the world where military forces are basically just heavily-armed police. As such they are often unsuited to what armies are meant to do: commit combat. When a country with these type of forces (insert name of your favorite S.American or African country here) gets into a tight-spot with a next-door neighbor, they just call in the Pro's to augment their armed forces. Incidentally, these countries are too poor to be able to afford reserves, real training, decent equipment, or even (in extreme cases) regular salaries.
The US and other "first-world" forces are not there yet, but they are already farming out support jobs to corporations that are populated by retired military personnel.
Mercenaries by any other name...