Just a few things to add. The DCA program is for fixed wing and rotary wing positions especially in the next few years. And despite some folks thoughts, it is not just a program for prior Army guys. Any service pilot can apply. Mudkow is a prime example of that. Are you still in San Fran by the way?
Besides that Kuma hit the points fairly well. But again just to add, the DCA program is only for prior military pilots. If they want to apply for flight school, they will have to go through the OCS selection process or if they are coming out of high school they can apply for the Coast Guard academy.
ATC Mobile trains HH-65, HH-60, and HU-25 Falcon jet pilots. The courses are about six weeks long. At some point they will also train CASA pilots but not quite yet. If you get selected to fly C-130s you will usually get your initial training in Little Rock, AR by the Air Force.
If you enter via the DCA program you get sent to your unit and from there you are sent to the Direct Commissioned Officer course which is basically a quick primer in what you need to know to be a Coast Guard officer and then you go off to your aircraft transition course.
While you are waiting for school you will be doing a few things depending on your unit and the amout of time you will have to wait. Anywhere from a couple of days to a few months. Some units have an Operations Duty Officer that basically deals with emergent situations during the day (and night) so the duty pilots don't have to deal with it. So tag you are it. When you aren't doing that you will be working on your collateral job. Every pilot has at least one and by not being qualified in an aircraft, you are provided ample time to do that job. Finally, you will get the opportunity to fly (ride) in the aircraft you will be flying so you get an idea of what to expect in training and you get a head start on what to study.
Good luck to your girlfriend's, uncle's, cousin's, brother or whoever it was.
