Well now to the big headline for everyone traveling and going through security at the airport for the first time since 9/11, the tsa is allowing some knives aboard planes. The announcement has been... See More
Well now to the big headline for everyone traveling and going through security at the airport for the first time since 9/11, the tsa is allowing some knives aboard planes. The announcement has been greeted with outrage by flight attendants. Abc's david kerley has the story. Reporter: An abrupt reversal this morning after a decade of banning and confiscating pocket knives, the government will now allow small knives on planes drawing an immediate angry response from flight attendants. It's going to create passenger confusion and it's also going to bring a weapon on board. It doesn't make any sense to allow knives on board aircraft. Reporter: This is what will be allowed in a month and a half, small folding knives with a blade shorter than 2.36 inches and 1/2 inch wide. Rules relaxed to carry on golf clubs, pool cues, lacrosse and hockey sticks. The tsa says it's about risk assessment. Every month at the 20 largest airports, four tons of knives are confiscated. We need to keep the screening lines moving at this point and looking for tiny little objects that are not likely to be used to hack an airplane is really just going to slow things down. Reporter: The head of the tsa told airline officials he wants to concentrate on what really worries him, explosives, especially the liquid explosives which are difficult to detect. Flight attendants complain there is an irony in this change by tsa. While the small pocket knifes are allowed, box cutters like the ones used to hijack the planes on 9/11 are still banned. They cannot be carried on to a plane. George? Thank goodness for that. Thanks very much.
This transcript has been automatically generated and may not be 100% accurate.