KINGSPORT — An investigation into an explosion last January at the Holston Army Ammunition Plant (HAAP) is "very close" to completion, BAE Systems spokesman Chris Finley said at the end of a public meeting on Thursday night. The meeting was to share information about what BAE and the U.S. Army are doing to end open burning at the facility, which produces explosives. One of the questions that came up during the hour-long meeting was what emissions were released into the air following the explosion. "I'm not going to comment on what was in that smoke," said Col.