Federal air marshals say their guns are loaded with bullets capable of running through more than one person, metal doors and thick glass -- too much firepower for an airplane.
"Not only is the person getting shot in danger, but everyone on the plane is because of the distance it travels," said one air marshal....

Several marshals say their bullets can penetrate most of the material in planes, leaving pilots and the plane's hydraulics and flight-control system vulnerable...

The House investigation said in its report released last week that policies dictating dress and boarding procedures in sight of passengers undermine the marshals' anonymity and suggested that any marshal who initiated changes fell victim to retaliation.
In its response to the committee, the Transportation Security Administration, which manages FAMS, said the policies have been changed. Air marshals who spoke to panel lawyers disagreed with the TSA's claims in interviews with The Washington Times.