The Transportation Security Administration (TSA) recently issued a warning to pet owners after a cat was discovered in a passenger's carry-on bag at Norfolk International Airport. Animals can be taken through the metal detector, but must be removed from their carriers and held by the owner. The TSA also recommends that pet owners inform the security officer that they are traveling with a pet, and never put them through the X-ray machine. "Attention pet owners: Please do not send your pet through the X-ray unit," said TSA spokesperson Lisa Farbstein.