Complex sentence: Air Policing is a traditional task of the Luftwaffe, while the constitutionality of the Air Security Act is disputed, the air policing done by the Luftwaffe is considered legal because of customary law.
Split into simpler sentences: Air Policing is a traditional task of the Luftwaffe. While the constitutionality of the Air Security Act is disputed, the air policing done by the Luftwaffe is considered legal because of customary law.