E:
Energy Information Administration (EIA) - Provides policy-independent data, forecasts, and analyses regarding energy and its interaction with the economy and the environment [U.S. Department of Energy (DOE), U.S. Energy Information Administration (EIA)]

T:
TSA: Helpful Hints for Holiday Travelers - Helpful hints to be prepared for security before traveling [U.S. Department of Homeland Security (DHS), Transportation Security Administration]

Travelers' Health - Official U.S. government health recommendations for traveling [U.S. Department of Health and Human Services (HHS), Centers for Disease Control and Prevention (CDC)]