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.
A chest x ray is a painless, noninvasive test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Noninvasive means that no surgery is done and no instruments are inserted into your body. chest x ray takes pictures of the inside of your chest. The different tissues in your chest absorb different amounts of radiation. Your ribs and spine are bony and absorb radiation well.