I've had the feeling that by and large our casualties have been relatively light in the WOT (war on terror), and I suspected they weren't too much higher than the numbers in peace time.
That's not to discount any of them. Every single death is a tragedy for a lot of people, and I regret every one. Nevertheless, the aggregate numbers are interesting and really impressive considering the type of war we're fighting.
Being a soldier (airman, marine, etc) is a dangerous profession even in times of peace, and naturally more so when actively engaging an enemy. If anything it's a credit to the training and leadership of our forces that we haven't lost more people.