Flying Squad officers dress in plain civilian clothing. The group were interviewed by military personnel in civilian clothing. It is a lapel pin, worn on civilian clothing. Circumstances dictate whether officers operate in uniform or civilian clothing. Frank allegedly thought these officers in civilian clothing were rival gangsters. Also on board were the builders, technicians and RLM radio engineers posing in civilian clothing. A lapel pin is also used for wear on casual civilian clothing. However, fighter pilots soon began training in civilian clothing. The footage showed that the officers were dressed in civilian clothing. The entire crew dressed in civilian clothing and there were no common navy uniforms. It is considered to be both sportswear and casual civilian clothing. Infiltrators in civilian clothing confused, attacked and killed refugees, including the wounded. Cameras in the mall revealed the gunmen carried assault rifles and wore civilian clothing. Large numbers of police officers abandoned their positions and changed into civilian clothing. South Vietnamese soldiers in civilian clothing infiltrated the north, spreading rumours of impending doom.