The way the USA is heading right now, don't be surprised if you never make it to the airlines if you join the military and use it as a springboard into commercial flying.
At the end of your engagement period, you may find yourself recalled onto the active duty list to pass gas over any number of sh*tholes, supporting 'aerobatic small planes' in pursuit of the next 2 or 3 President's foreign policy!
How'd you feel about that!
Conversely, there may be no airline to hire you due to the astronomic rise in the cost of gas in 10 years time.