By . Associated Press . Baggage screeners at Chicago's O'Hare International Airport have discovered two World War I artillery shells in checked luggage that arrived on a flight from London. The Transportation Security Administration says the bags belonged to a 16-year-old and a 17-year-old who were returning from a school field trip to Europe. TSA spokesman Jim McKinney says a bomb disposal crew determined the shells were inert and no one was ever in danger. Baggage claim: Two World War I artillery shells discovered by baggage screeners in checked luggage that arrived on a flight from London at Chicago's O'Hare International Airport . Odd import: The teens told law enforcement they obtained the shells at a French World War I artillery range. It was not clear how . Suspect objects: FBI and Chicago Police officers evacuated the baggage room until the items could be clears as inert and interviewed the two minors . The teens told law enforcement they obtained the shells at a French World War I artillery range. It was not clear how. TSA explosives experts believe they are French 77 mm shells. They were seized Monday evening while the teens were transferring to a flight to Seattle. The teens were questioned then allowed to travel onward. They weren't charged. Historical artifacts: Transportation Security Administration officers at OÂ¿Hare Airport spotted two military-grade shells in the checked baggage of two minors, who were part of a field trip returning from London . Checking out: The TSA says the bags belonged to a 16-year-old and a 17-year-old who were returning from a school field trip to Europe. A bomb disposal crew determined the shells were inert and no one was ever in danger . 'As a reminder, large munitions are not permitted to be brought on board airplanes, in carry-on or checked baggage,' TSA said in a statement. 'Small arms ammunition, including under .75 caliber and shotgun shells, can be packed in checked baggage in accordance with airline policies'.
TSA spotted two military-grade shells in teenagers' checked baggage .
Large munitions are prohibited from being carried in checked or carry-on luggage .
The shells made it across the Atlantic without detection .
The TSA contacted the FBI and Chicago police who responded and evacuated the baggage room until the items could be cleared .
The bags belonged to a 16-year-old and a 17-year-old who were returning from a school field trip to Europe .
The teens were questioned then allowed to travel onward and weren't charged .
By . Associated Press . Baggage screeners at Chicago's O'Hare International Airport have discovered two World War I artillery shells in checked luggage that arrived on a flight from London. The Transportation Security Administration says the bags belonged to a 16-year-old and a 17-year-old who were returning from a school field trip to Europe. TSA spokesman Jim McKinney says a bomb disposal crew determined the shells were inert and no one was ever in danger. Baggage claim: Two World War I artillery shells discovered by baggage screeners in checked luggage that arrived on a flight from London at Chicago's O'Hare International Airport . Odd import: The teens told law enforcement they obtained the shells at a French World War I artillery range. It was not clear how . Suspect objects: FBI and Chicago Police officers evacuated the baggage room until the items could be clears as inert and interviewed the two minors . The teens told law enforcement they obtained the shells at a French World War I artillery range. It was not clear how. TSA explosives experts believe they are French 77 mm shells. They were seized Monday evening while the teens were transferring to a flight to Seattle. The teens were questioned then allowed to travel onward. They weren't charged. Historical artifacts: Transportation Security Administration officers at OÂ¿Hare Airport spotted two military-grade shells in the checked baggage of two minors, who were part of a field trip returning from London . Checking out: The TSA says the bags belonged to a 16-year-old and a 17-year-old who were returning from a school field trip to Europe. A bomb disposal crew determined the shells were inert and no one was ever in danger . 'As a reminder, large munitions are not permitted to be brought on board airplanes, in carry-on or checked baggage,' TSA said in a statement. 'Small arms ammunition, including under .75 caliber and shotgun shells, can be packed in checked baggage in accordance with airline policies'.
16-year-old and a 17-year-old who were returning from a school field trip to Europe. TSA spokesman objects: FBI and Chicago Police officers evacuated the baggage room until the items could teens were questioned then allowed to travel onward. They weren't charged. Historical military-grade shells in the checked baggage of says the bags belonged to a 16-year-old and a 17-year-old who were returning from a school