The comany I work with is Underwater Construction Corporation. They have NO government contracts. My company makes no bones about weeding out those who can't do a good job, regardless of race, age or gender. If you are not safe to work with you will not work.
I may have gotten hired because the company needed a woman, I will never know, but I certainly kept the job because I did a GOOD job. I graduated the top of my class with %100 on the final and %100 on the weld test (this was not a written test). Any training the company paid for I always did among the top three.
Again, NAVYGUY, age has little to do with it if you know what you want and you know you can do it.