Longmont Police have confirmed that one plane went down behind the new Walmart on Highway 119 just east of the county line. Longmont Police also have multiple reports of another plane crash near the Longmont Airport. Some eyewitnesses are reporting they collided in mid-air.  1 person has been confirmed dead and County Line Rd & 119 closed at crash site. Don't know yet if any injuries on 2nd plane.  The collision occurred at about 11:45 a.m. More details at Fox 31