Premise: "A uniformed color guard officer watches his brown gun prop spin in the air while another does the same behind him."
Hypothesis: "Nobody is wearing a uniform."
Do we know that the hypothesis entailed by the premise? Now, let's be accurate as possible. Some thinking first:
A uniformed color guard officer watches his brown gun prop spin in the air while another does the same behind him and on the other side Nobody is wearing a uniform. So, the answer is no.