LCDR John Berg takes an X-ray as part of root canal therapy. [Officer][X-ray][Patient][Equipment and Supplies] "Reserve Dental Exercise JOTS '93" by LCDR D. Wright, USNR
Navy Medicine Magazine January -February 1994. online at
archive.org/details/NavyMedicineVol.85No.1January-februar... or
upload.wikimedia.org/wikipedia/commons/2/21/NAVY_MEDICINE... 