Hmmm, different take here. Had my first anxiety attack 5 years ago. Thought it was a heart attack at the tender age of 27. Lotta guys wouldn't cop to this, but I do happily.
See, a panic attack isn't the same feeling as being shot at. I've been shot at. It is about 10 times the adrenaline release. Like someone stepping on your pituitary, and squeezing every last little bit out. But you learn, after 2 or 3, how to face fear and adrenaline the likes of which you have never felt. If you can remain calm and collected while your BP is pushing 220/174 (true story), your EXACTLY the MF'r I want sitting next to me.
After experiencing all the fear response your body can give, the rest of the time you are a pretty frosty dude.
I know a few guys, like me, that were sought out for our long experience in desert environments, and worked overseas some years back. I was always very honest about my issues to them, and reluctantly some time later, almost HALF of the guys said they had experienced at least one.
Fortunately panic attacks and acute anxiety manifest themselves AFTER the stressor event(s), so when you hit your rack, or even days later, or weeks really, you get popped. But you learn to feel them coming on, and out comes the Clonopin. (They say they are addictive, but not for me)
Then, after 20 minuites, GTG. Actually, that shit is so good, stuff could blow up next to you and you could care less. And at least for me, no druggy feeling or reflex deficiencies.
I look at my anxiety issues as a HUGE plus, and frankly a unique opportunity, like learning to fly.
YMMV.
By the way, after about 40, most people tend to grow out of them. Weird. I haven't had one in 2 years.