The men they saw were not all the men, Geric felt it. He felt eyes on them, on the king, as they were standing in a place he disliked. Trees hid archers, cowardly enemies who did not show their faces, who were much harder to protect the king from in this situation. The men in front of them, they were dangerous yes, but the Kingsguard could deal with them. Geric could deal with them, he knew. But the archers? That was harder.
Threats to the king were there, and Geric had moved up, so as to physically somewhat place himself in a position to be the first attacked, should they attack. His sword was out - no time to waste drawing it should they actually charge. And one threatened him, but Geric did not care. Such questions had been asked of him hundreds of times over the years.
Instead he paid attention to the men they could see, eyes alert for others. The archers were a problem, but his was not the job to flush them. If the men attacked or the king ordered, then his speed would be shown. Not before.