Rooftop

The second character.

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Sergeant Shayne Wolfe is a member of the United States Army. He is a Delta marksman with the rooftop observation unit. He is an excellent marksman and expert on hand-to-hand combat. During the Code Red suppression, Shayne would leave his post to help Major Shaw and several survivors escape the firebombing.

Shayne was a friendly, street-smart and wisecracking person. He was willing to risk his life for others.
It was also hinted that he may have had a romantic interest in Elizabeth Shaw.

(Based on 28 Weeks Later)