BWI Marshall works in close partnership with the Transportation Security Administration (TSA) to ensure safe travel for all travelers. In June 2010, the Advanced Imaging Technology, or AIT devices, became the primary passenger screening tool used by the TSA throughout much of BWI Marshall Airport.
AIT units are used by the TSA to detect hidden items. The security technology provides walk-through imaging which efficiently detects metallic and non-metallic threats, including weapons, explosives and other items without physical contact. The AIT machines used by the TSA at BWI Marshall utilize millimeter wave technology which bounces electromagnetic waves off the body. Advanced imaging technology is safe and meets national health and safety standards.
In August 2011, the TSA upgraded its AIT units at BWI Marshall Airport to maintain a high level of security, to enhance privacy and to improve the passenger experience. The AIT devices now produce a generic, computer-generated outline of a person.
To use the AIT machine, a passenger walks into the imaging portal. Once inside, they will be asked to stand in different positions and remain still for just a few moments while the machine scans the traveler. Once complete, the passenger will exit the opposite side of the portal.
The AIT screening is optional for all passengers. Passengers who do not wish to utilize this screening will receive an equal level of screening, including a physical pat-down.
AIT machines were first installed at BWI Marshall in April 2008 and prior to June 2010 had been used for secondary security screening.
3-1-1 for carry-ons = 3 ounce bottle or less (by volume) ; 1 quart-sized, clear, plastic, zip-top bag; 1 bag per passenger placed in screening bin. One-quart bag per person limits the total liquid volume each traveler can bring. 3 oz. container size is a security measure.
Consolidate bottles into one bag and X-ray separately to speed screening.
Be prepared. Each time TSA searches a carry-on it slows down the line. Practicing 3-1-1 will ensure a faster and easier checkpoint experience.
3-1-1 is for short trips. If in doubt, put your liquids in checked luggage.
Declare larger liquids. Medications, baby formula and food, breast milk, and juice are allowed in reasonable quantities exceeding three ounces and are not required to be in the zip-top bag. Declare these items for inspection at the checkpoint.
Come early and be patient. Heavy travel volumes and the enhanced security process may mean longer lines at security checkpoints.
TSA working with our partners. TSA works with airlines and airports to anticipate peak traffic and be ready for the traveling public.
There are many items that are prohibited, some in carry-on and some in carry-on and checked baggage. For details about the new security procedures and timesaving tips visit the TSA Website .