Orlando: It was the first major success for the new covert screening techniques, which involve plainclothes officers mingling with travelers, of the Transportation Security Administration (TSA) officials when they nabbed Kevin Brown, who was carrying pipe bomb-making materials onto a flight home.

Kevin Christopher Brown, a former Army veteran, was arrested on Tuesday at Orlando International Airport when his luggage was found containing pipe bomb-making materials. The 32-year-old, tall and slender with a ragged beard, Brown was arrested when he approached the Air Jamaica ticket counter at Orlando International Airport.

According to the TSA officials, his luggage had everything needed to build a pipe bomb — glass bottles with nitromethane, a model rocket ignitor, batteries, galvanized pipes with caps drilled to fit a fuse and even instructions. It included two glass vodka bottles containing nitromethane, a colorless liquid used as a fuel for drag racing, in manufacturing and as a cleaning solvent, a model rocket ignitor, galvanized pipes, end caps, two small containers containing BB's, batteries, a laptop and instructions on how to make bombs.

According to FBI reports, behavior detection officers Frank Skowronski and Jose Zengotita, were called to watch and study the mental health of Brown after his arrest. While interrogations, Brown told officials he hoped the liquor bottles would disguise the nitromethane. He first told that he wanted to detonate the materials on a tree stump in Jamaica. Later he revealed that he wanted to show his friends there how to build explosives like he saw in Iraq. Investigators questioned him whether he had ever been to Iraq — where similar bombs were made.

TSA officials refused to specify what he did that looked suspicious, saying it would undermine TSA's strategy, but they did reveal that they generally studied facial expressions and body posture for fear, stress and deception. Skowronski said, "When he came up to ticket counter, he wouldn't look at anyone directly."

It was Cleveland Laycock, a manager in TSA's behavioral detection program walking in civilian clothes, who first spotted Brown approaching the Air Jamaica ticket counter. Dave Platt, a TSA bomb appraisal officer who searched the luggage, described the instructions as something that could be downloaded from the Internet. He said the bags had virtually everything necessary to make a pipe bomb, and someone of his experience could have assembled it in about 15 seconds.

Passengers were briefly cleared out of the ticketing area where Brown checked in for a flight to Montego Bay in Jamaica. Some flights departing Orlando were delayed up to two hours. However, authorities and airline officials were making repeated assurances that passengers were never in danger.

Brown was charged Wednesday in federal court with attempting to bring an explosive or incendiary device on an airplane. Brown, a Jamaican national, served in the Army and was discharged in 2003. He had been receiving care at the Malcom Randall Veterans Affairs Medical Center in Gainesville. He was in the U.S. legally. Meanwhile, Jamaica's prime minister has ordered the Jamaica Constabulary Force to investigate Brown's activities in that country.