To prevent the transportation of dangerous goods

To ensure the safety of passengers and crew

To facilitate the smooth flow of passengers and luggage

To comply with government regulations

Liquids in containers larger than 100 milliliters

Sharp objects such as knives and scissors

Electronic devices such as laptops and tablets

Travel-sized toiletries in clear quart-sized bags

22 x 14 x 9 inches (56 x 36 x 23 centimeters)

24 x 16 x 10 inches (61 x 41 x 25 centimeters)

26 x 18 x 12 inches (66 x 46 x 30 centimeters)

28 x 20 x 14 inches (71 x 51 x 36 centimeters)

To allow passengers to bypass security lines

To provide expedited screening for trusted travelers

To collect biometric data for security purposes

To facilitate the use of mobile boarding passes

Lithium batteries

Firearms and ammunition

Perishable food items

Electronic devices such as laptops and tablets

Place liquids in clear, quart-sized bags

Wrap liquids in plastic wrap to prevent leakage

Pack liquids in sturdy, leak-proof containers

Label all liquid containers with their contents

40 pounds (18 kilograms)

50 pounds (23 kilograms)

60 pounds (27 kilograms)

70 pounds (32 kilograms)

To detect potential threats and prevent prohibited items from being carried onto the aircraft

To verify the identity of passengers and ensure they have valid travel documents

To facilitate the smooth flow of passengers and luggage through the airport

To collect data for statistical purposes

Small, blunt objects such as keys and jewelry

Electronic devices such as smartphones and tablets

Travel-sized toiletries in clear quart-sized bags

Food items such as sandwiches and snacks

Liquids must be in containers no larger than 3 ounces (90 milliliters)

Liquids must be in a single quart-sized bag

Liquids must be placed in a clear, resealable bag

All of the above

Remove shoes and place them in a bin provided by the TSA

Remove shoes and hold them in your hands while walking through the metal detector

Remove shoes and place them on the floor next to the metal detector

Remove shoes and leave them at the security checkpoint

To detect concealed weapons and explosives

To verify the identity of passengers

To screen for medical conditions

To facilitate the smooth flow of passengers through the checkpoint

Declare prohibited items to the TSA officer and follow their instructions

Dispose of prohibited items in a designated bin

Leave prohibited items at the security checkpoint

Take prohibited items with you on the aircraft

To detect potential threats and prevent prohibited items from being carried onto the aircraft

To verify the identity of passengers and ensure they have valid travel documents

To facilitate the smooth flow of passengers and luggage through the airport

To collect data for statistical purposes

Place liquids in clear, quart-sized bags

Wrap liquids in plastic wrap to prevent leakage

Pack liquids in sturdy, leak-proof containers

Label all liquid containers with their contents