I am guessing with my age I probably do not qualify for a SEAL Challenge Contract because by the time I would ever get to a second or third attempt at BUD/s (if it were necessary) I would be older than 28. Looking to enlist with the quickness, because I am sure there is a backup....
German for X rays where 'X'  means   'unknown'. In Europe X-rays are known as Roentgen rays.    X-Radiation is a form of electromagnetic radiation having a  wavelength of   0.01 to 10 nanometers.NS2: The name x-ray was applied to radiation in the same frequency as gamma radiation but which originate from a man-made source.
Where does the X in X-ray come from? Here's a piece of high-energy astrophysics trivia (you never know when you might need to know these things). Where does the X in X-ray come from? The answer is that a German physicist, Wilhelm Roentgen, discovered a new form of radiation in 1895. He called it X-radiation because he didnÃ¢â¬â¢t know what it was. Yes, itÃ¢â¬â¢s as simple as that.