This photo taken Jan. 23, 2013 shows Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) processed firearm transaction documents from firearms dealers no longer in business, no matter the condition of the documents. Such as this fire and water damaged document, at their National Trace Center in Martinsburg, W.Va. (AP Photo/Cliff Owen)
This photo taken Jan. 23, 2013 shows Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) tracer Debbie Marshall reaching for a microfilm roll of firearm transaction documents, from firearms dealers no longer in business, as she researches a firearm used in a crime, at the National Trace Center in Martinsburg, W.Va. (AP Photo/Cliff Owen)
This photo taken Jan. 23, 2013 shows Traci Slonacker photographing firearm transaction documents, from dealers no longer in business, at the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) National Trace Center in Martinsburg, W.Va,. (AP Photo/Cliff Owen)
This photo taken Jan. 23, 2013 shows tracer Wendy Myer working to trace the ownership of a firearm used in a crime in a cubicle crowded with boxes of firearms transactions from dealers no longer in business, at the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) National Trace Center in Martinsburg, W.Va. (AP Photo/Cliff Owen)
This photo taken Jan. 23, 2013 shows Charles Houser, Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), chief, National Trace Center speaking in his office in Martinsburg, W.Va. (AP Photo/Cliff Owen)
WASHINGTON (AP) — In the fictional world of television police dramas, a few quick clicks on a computer lead investigators to the owner of a gun recovered at a bloody crime scene. Before the first commercial, the TV detectives are on the trail of the …
