With millions of people traveling by air during the holiday season, the Federal Bureau of Investigation Philadelphia Field Office advises travelers to remain vigilant and exercise caution in airports or traveling on aircrafts.

The FBI remains committed to prioritizing investigations into federal crimes occurring on aircrafts endangering the safety of passengers, the flight crews and flight attendants, according to a recent news release from the agency.

Some of the most common crimes the FBI investigates during a flight are:

•Sexual misconduct, including sexual assault, indecent exposure, lewd, indecent, sexual or obscene acts and indecent or sexual proposals to a minor.

•Assault, including striking or hitting, throwing an object, grabbing or unwanted touching and spitting.

•Interference with flight crew members, including assault, threats or intimidation and/or an attempt or conspiracy to do the same.

•Theft

The FBI also investigates airport-based violations.

Violations include violence against persons and property at international airports if the victim or offender is a United States national or if the offender is located within the United States as well as interfering with airport security screening personnel ahead of a flight, including airport employees or airline employees working at the gate.

The FBI also investigates bomb threats whether they are made on the ground or on a flight, according to the news release.

FBI Airport Liaison Agents are assigned to aproximately 450 U.S. aviation facilities with passenger screening operations regulated by the Transportation Security Administration. These agents respond to crime aboard aircrafts, a violation which falls within the FBI’s special investigation jurisdiction.

Everyone should be aware of their surroundings while on an airplane, according to authorities.

If you have been the victim of one of these crimes or if you have witnessed one take place, report it to your flight crew, airport authority police and/or the FBI.

Tips can be reported to 1-800-CALL-FBI (225-5324) or tips.fbi.gov.

FBI Philadelphia can be reached at 215-418-4000.