Seems like a great way to serve your country without getting shot or blown up nearly as much...
What makes you think they don't get shot or blown up?
I was in the Navy in Viet Nam with CTF115 (Operation Market Time). The coasties were right there with their 82 footers (Point Class) along with our PCFs (Swift Boats) and they had WHECs doing offshore duty. They also had a Loran site on Con Son.
The Coasties do go "In Harm's Way"!