An epidural is a procedure whereby drugs are injected through a catheter which is inserted into the epidural space. The epidural space is the space between the bony spinal canal and the dura (which surrounds the spinal cord and spinal fluid).
1 All drafted players must be at least 19 years old during the calendar year of the draft. 2  To determine whether a player is eligible for a given year's draft, subtract 19 from the year of the draft. 3  If the player was born during or before that year, he is eligible.
As of 2015, 27 years old is the maximum age for men and women who want to enlist and enroll in basic training in the U.S. Air Force. The maximum age is 34 years old for the Air Force Reserves and 39 years old for the Air National Guard.