ATA flight to Orlando, Fla.

A federal magistrate declared Coburn to be a continuing danger even though doctors said he was mentally competent to stand trial. The fourth knife was described as tubular, with a hidden 2 1/2-inch blade.

Police said they did not know why the man had the prohibited items, which were spotted by an airport security guard about 3:50 p.

Edward Coburn, 31, of Fresno, burst into the cockpit of the plane screaming that the pilots planned to crash into the Sears Tower.

Johnson was charged with attempting to board an aircraft with a concealed dangerous weapon. 8 (UPI) -- Federal officials filed charges Plastic Cutlery Tuesday against a 20-year-old Iowa man who allegedly tried to board a plane at Midway Airport with four knives, a box cutter and several other prohibited items. He had purchased a one-way ticket on Monday's 8:30 p.

A California man charged in a separate incident with storming the cockpit of a Chicago-bound American Airlines plane last October remained in federal custody after pleading innocent to one count of interfering with a flight crew. Three of the knives were described as pocket knives with 3- to 4-inch blades. In addition to the knives and box cutter, Johnson's bag allegedly held two road flares, 16 rounds of ammunition, a set of handcuffs, a bottle of lighter fluid and a lighter.

In an affidavit filed for Johnson's court appearance, FBI Special Agent Joseph Stiller said Johnson admitted packing the knives and other contraband and said he had planned to check his bag after getting a cup of coffee.

The suspect was identified as Steven Paul Johnson.

.m. The charge carries a maximum sentence of 10 years in prison upon conviction.

CHICAGO, Jan. The pilot and passengers forcibly restrained the man, who had a history of mental illness, and the jet was escorted to O'Hare International Airport with Air Force F-16 fighters off each wing. The coffee vendor was beyond the airport security checkpoint.m