LANE MATZKE, 3, CAN'T TELL YOU WHAT'S IN THE BOXES stacked up in his living room. But he knows his desert camouflage helmet is appropriate headwear around the boxes. "He wore his helmet when we went to pick up coffee for the soldiers," his mom, Kim Matzke, says, smiling as Lane's brother, Garrett, 2, slips on his Army-green helmet. Their helmets match their dad Shawn's U.S. Army National Guard uniform dangling from a hanger above the boxes. The uniform constantly reminds Shawn, 27, that he's not with his infantry unit preparing to leave for Kuwait at the end of the month. Instead, he's home recovering from four kidney stones that provoked military doctors to deem him combat inefficient. The stones are gone now, but Army doctors worried they could return. Shawn was honorably discharged for medical reasons in April, just seven months after he joined the service.