It 's not really a formal thing , just a bunch of musicians who get together and sing when there 's some kind of event at work . We got to sing at the beginning and end of the ceremony . We sang the national anthem ( a capella in four part harmony ) at the beginning and the Air Force song at the end . I got to stand three people away from Hillary Clinton :) At the end , when we walked out of the room , we kind of got in the way of the secret service .

Question: What may have happened after they were in the way of the secret service ?
Answer: They may have asked them to move .None of the above choices .They may have pushed them to the side .They may have interrogated them .