Operations | Slideshow

Partial Building Collapse in Pa.

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Partial Building Collapse

A man is helped by emergency personnel after he was rescued from a partially collapsed building, Wednesday July 12, 2017, in Washington, Pa. (Celeste Van Kirk/Observer-Reporter via AP)

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Partial Building Collapse

Emergency crews examine an apartment building that collapsed in Washington, Pa., Wednesday July 12, 2017. (Nate Guidry/Pittsburgh Post-Gazette via AP)

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Partial Building Collapse

A man is helped by emergency personnel as he is rescued from a partially collapsed building, Wednesday July 12, 2017, in Washington, Pa. (Celeste Van Kirk/Observer-Reporter via AP)

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Partial Building Collapse

Emergency crews examine an apartment building that collapsed in Washington, Pa., Wednesday July 12, 2017. Celeste Van Kirk/Observer-Reporter via AP)

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Partial Building Collapse

Emergency crews examine the front of an apartment building that collapsed in Washington, Pa., Wednesday July 12, 2017. Celeste Van Kirk/Observer-Reporter via AP)

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Partial Building Collapse

An emergency crew member is examined by paramedics at the scene of an apartment building that collapsed in Washington, Pa., Wednesday July 12, 2017. (Nate Guidry/Pittsburgh Post-Gazette via AP)

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Partial Building Collapse

Emergency crews block off the street as they examine the front of an apartment building that collapsed in Washington, Pa., Wednesday July 12, 2017. (Nick Kratsas/Observer-Reporter via AP)