A body-worn tracking device BWTD, comprising: a global navigation satellite system GNSS, device; a cellular communication unit; at least one processor; and at least one memory device comprising instructions that, when executed by the at least one processor, cause the at least one processor to: determine whether the BWTD is located on board an aircraft; and responsive to determining that the BWTD is located on board the aircraft: disable the GNSS device and the cellular communication unit; and responsive to determining that the BWTD is located on the aircraft, determine whether the aircraft is a permitted aircraft on which an individual assigned to wear the BWTD is permitted to travel, wherein execution of the instructions causes the at least one processor to temporarily refrain from generating an alert that indicates a current location of the BWTD cannot be determined in response to determining that the BWTD is located on board an aircraft and determining that the aircraft is the permitted aircraft, where the determining whether the aircraft is a permitted aircraft on which an individual assigned to wear the BWTD is permitted to travel is performed by at least causing the at least one processor to: determine flight information for the aircraft; determine whether the flight information for the aircraft corresponds to expected flight information for the permitted aircraft; and determine that the aircraft is the permitted aircraft in response to determining that the flight information for the aircraft corresponds to expected flight information for the permitted aircraft. a global navigation satellite system GNSS, device; a cellular communication unit; at least one processor; and at least one memory device comprising instructions that, when executed by the at least one processor, cause the at least one processor to: determine whether the BWTD is located on board an aircraft; and responsive to determining that the BWTD is located on board the aircraft: disable the GNSS device and the cellular communication unit; and responsive to determining that the BWTD is located on the aircraft, determine whether the aircraft is a permitted aircraft on which an individual assigned to wear the BWTD is permitted to travel, determine whether the BWTD is located on board an aircraft; and responsive to determining that the BWTD is located on board the aircraft: disable the GNSS device and the cellular communication unit; and responsive to determining that the BWTD is located on the aircraft, determine whether the aircraft is a permitted aircraft on which an individual assigned to wear the BWTD is permitted to travel, wherein execution of the instructions causes the at least one processor to temporarily refrain from generating an alert that indicates a current location of the BWTD cannot be determined in response to determining that the BWTD is located on board an aircraft and determining that the aircraft is the permitted aircraft, where the determining whether the aircraft is a permitted aircraft on which an individual assigned to wear the BWTD is permitted to travel is performed by at least causing the at least one processor to: determine flight information for the aircraft; determine whether the flight information for the aircraft corresponds to expected flight information for the permitted aircraft; and determine that the aircraft is the permitted aircraft in response to determining that the flight information for the aircraft corresponds to expected flight information for the permitted aircraft. determine flight information for the aircraft; determine whether the flight information for the aircraft corresponds to expected flight information for the permitted aircraft; and determine that the aircraft is the permitted aircraft in response to determining that the flight information for the aircraft corresponds to expected flight information for the permitted aircraft.