Hello back at ya & welcome.
First, PA is not in the nursing career path such as the other positions you mentioned; NP & CRNA. I often look back on my career path I wished I'd chosen the PA profession. Nonetheless, I'm proud to be a male nurse. Nursing can be a very personally rewarding career with definite job security.
If, you want to eventually become an Nurse Anesthetist I suggest you do a search [make time ] for the various CRNA programs in your area and look at there requirements/prereqs. Most all require at least 12 months FT ICU experience prior.
The Army Medical Department has excellent school opportunities, including tuition assistance, for both PA & CRNA. BTW, I'm not a recruiter.