Law enforcement officers wait at the entrance to the Jackson Police Department Thursday, after police say a murder suspect fatally shot detective Eric Smith inside the headquarters.
Chris Carlson / AP
Law Enforcement personnel gear up along Hwy 38 during the hunt for accused killer and fired Los Angeles police officer, Christopher Dorner in Yacaipa, Caif.,Tuesday, Feb. 12, 2013.
AP / The Dothan Eagle, Jay Hare
Law enforcement personnel load provisions into a bus during the third day of a hostage crisis involving a 5-year-old boy, in Midland City, Ala.
Matt Rourke / AP
Law enforcement officials work around a US Airways flight at Philadelphia International Airport, after the plane returned to the airport, Thursday, Sept. 6, 2012, in Philadelphia. A security scare that prompted authorities to recall an airborne U.S. flight was the result of an apparent hoax, police said Thursday.
MATT ROURKE / AP
A plane is escorted by a law enforcement vehicle to a terminal at Philadelphia International Airport in Philadelphia, Thursday, Jan. 21, 2010. A spokesman for US Airways says a flight from New York to Louisville, Ky., has been diverted to Philadelphia International Airport because of security concerns.
David Tulis / AP
Law enforcement personnel investigate the scene of an Atlanta Police Department helicopter crash early Sunday, Nov. 4, 2012, that killed two officers aboard the aircraft when it crashed near a shopping center late Saturday, Nov. 3, 2012.
AP
Law enforcement officials are on the scene of a home in Hardin, Texas Tuesday, June 7, 2011, after receiving an anonymous tip that multiple dismembered bodies were buried there.
Chris O'Meara / AP
Law enforcement officers carry high powered weapons as the cross the road near the location where two Tampa, Fla., police officers were shot and killed during a traffic stop.
Paul Sakuma / AP
Law enforcement officials bow their heads during a news conference at the federal building in Las Vegas
Madalyn Ruggiero / AP
A law-enforcement official walks away from an armored vehicle in Hillsdale County, Michigan, on March 29, 2010
Orlando Sentinel / MCT / Landov
Law-enforcement officials remove a Burmese python from the home where it killed 2-year-old Shaiunna Hare in Oxford, Fla.
RIC FRANCIS / AP
Law enforcement officers examine a bike at the home of Ruben Cavazos, former national president of the Mongol motorcycle gang Tuesday, Oct. 21, 2008, in West Covina, Calif.
Joerg Koch / Getty Images
Defendant Beate Zschaepe enters court with law enforcement officers on the first day of the NSU neo-Nazi murder trial in Munich, on May 6, 2013.
DOJ / Handout / Getty Images
A collection of fireworks that was found inside a backpack that was recovered by law enforcement agents from a landfill in New Bedford, Mass., on April 26, 2013 that belonged to Boston Marathon bombing suspect Dzhokhar Tsarnaev.
HANDOUT / REUTERS
Dzhokhar Tsarnaev, 19, is searched by law enforcement officers in this handout photo provided by the Massachusetts State Police in Watertown, Mass., on April 19, 2013.
HANDOUT / REUTERS
Dzhokhar Tsarnaev, 19, is searched by law enforcement officers in this handout photo provided by the Massachusetts State Police in Watertown, Mass., on April 19, 2013.
Pablo Martinez Monsivais/AP Photo
President Barack Obama listens with local leaders and law enforcement officials while participating in a roundtable discussion at the Minneapolis Police Department Special Operations, Monday, Feb. 4, 2013, in Minneapolis, Minn.
NBC News / File / AP
This undated file photo circulated by law enforcement and provided by NBC News, shows Adam Lanza.
DAVID LONGSTREATH/AP
Timothy McVeigh is surrounded by law enforcement officials after his arrest
STEPHEN MORTON/AP
Volunteer pilots train to disarm hijackers at the Federal Law Enforcement Training Center in Brunswick, Ga
As schools across the country review their lockdown procedures, more than 100 teachers and administrators in Alabama took crisis-management preparation a step...
Just before dawn on July 26, 1953, Arizona law enforcement launched what has since become known as the Short Creek raid: the arrest of men and women in an...