this has been in the back of my mind as well. my rationalization was pretty simple.
the fact that there has been a shift to PMC's (private military contractors) is not accidental. in a nutshell they are paid and will generally do what their "employer" instructs. nice way to avoid those pesky servicemen/women with ideals who may see certain orders as an affront to the constitution.
al gore is full of carbon enriched shit