Basic career information for hundreds of jobs in the United States. Earnings, prospects, and information about the job markets in each state. From the U. S. Department of Labor. (No student ID needed.)
"Charged with determining the probable cause of transportation accidents and promoting transportation safety, and assisting victims of transportation accidents and their families."
NIOSH is part of the U.S. Centers for Disease Control and Prevention, in the U.S. Department of Health and Human Services. Includes information about safety topics and avoiding workplace hazards.
"The Next Generation Air Transportation System (NextGen) is the FAA-led modernization of America's air transportation system to make flying even safer, more efficient, and more predictable."
Information about how and why the FAA airport development offices plan to deploy funds for future goals such as safety improvements or navigation updates -- region includes WA, OR, ID, MT, WY, CO, UT
Instrument Flying Handbook by 
Pilot's Handbook of Aeronautical Knowledge by 
Safety and Reliability in Cooperating Unmanned Aerial Systems by 