December is known as the month of holidays and school vacations; 0f snowy weather; of the longest night of the year.
It's also Critical Infrastructure Protection Month.
President Barack Obama issued the proclamation Wednesday, the third year in a row he's designated December as such. "This month, we affirm the fundamental importance of our critical infrastructure and recommit to preparing for, responding to, and recovering from hazardous events and emergencies efficiently and effectively," he wrote. "I call upon the people of the United States to recognize the importance of protecting our Nation's critical resources and to observe this month with appropriate events and training to enhance our national security and resilience."
You can read the proclamation here (pdf).