[article] Call it the most unique game of hide-and-seek Michiana has seen in a while. Anyone can play, no invitation required. Unlike the childhood merriment, though, willing participants won't be seeking out another person. The target of this mission: Find a fluorescent pink paper airplane with a 28-inch wingspan. Here's the catch -- it could be anywhere in a swath that extends from just north of Plymouth in Marshall County to just south of South Bend in St. Joseph County. One other snag -- it's probably buried under a foot of snow. It all stems from a world record attempt launched from eastern Illinois on Dec. 28 by members of Fox Valley Composite Squadron, a West Chicago, Ill.-based unit of the Civil Air Patrol. "We started getting into near-space ballooning about two years ago," 1st Lt. Gary Brown, near-space balloon project manager for the group, said. "It's about the only way the average citizen is ever going to approach space. At the altitudes reached, you're above 99 percent of the Earth's atmosphere." Squadron leaders started the project for youth cadet members, ages 12 to 17, as a science, technology, engineering and math (STEM) project. Over the past couple of years, the group has launched several balloons. This one was different, though.