PLEASE KEEP THESE SAILORS IN YOUR MEMORY

UPDATED 01/12/12 8:56 a.m.

NAVAL STATION GREAT LAKES, Ill. (CBS) — A 19-year-old U.S. Navy recruit has died during boot camp training at the Great Lakes Naval base.

Seaman Recruit Christopher Walker, 19, of Kittaning, Pa., died Wednesday morning at Recruit Training Command at Great Lakes, according to a release from the Naval Service Training Command.

Walker was participating in a standard physical fitness assessment, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~2ND Recruit dies at Great Lakes RTC

A naval recruit who aspired to be a military police officer died Friday of causes related topneumonia, marking the second recruit death in a month at Naval Station Great Lakes.

Navy officials said it is not clear when Elizabeth Richardson, 19, of Zimmerman, Minn., contracted her illness, but that there was no sign others in her battalion had been stricken.

Richardson arrived at the base Jan. 30, and 10 days later went to the nearby Lovell Federal Health Care Center with a fever and a rapid heartbeat, said Navy spokesman Mike Miller. She died the next day, the first time in memory that a recruit had died of pneumonia, Miller said.