The vulnerability of america's infrastructure creates serious concerns about possible acts of

Includes any system or asset that, is disabled or disrupted in any significant way, would result in catastrophic loss of life or catastrophic economic loss. Some examples include: Public water systems, primary roadways, bridges, and highways, key data storage and processing facilities, stock exchanges, or major banking centers, chemical facilities located in proximity to large population centers, major power generator facilities, hydroelectric facilities and dams, and nuclear power plants

The snow had blocked up his window. why because it involves pronouns like he,him,his,himself, she,her