That answer may be familiar to enclosed space victims.
The air we breathe consists of several major components. Oxygen, critical for human life makes up about 20.9% of that air. That majority of air is made up of nitrogen – close to 78%! The remaining 1% largely consists of argon (~0.93%) and carbon dioxide (~0.04%). It doesn’t seem that much could go wrong with this atmosphere, but taking away critical components or adding toxic substances can kill us in an instant.
The U.S. Maritime Administration issued U.S. Maritime Alert 2018-004 A “Possible GPS Interference – Eastern Mediterranean Sea” on the 23rd of March. This is in response to reports of GPS disruptions and interference from multiple vessels and aircraft between Cyprus and Port Said, Egypt. These reports come on the heels of multiple warnings by the same agency in 2017 of GPS disruptions in the Black Sea, primarily off the coast of Novorossiysk, Russia. These same warnings reaffirmed that GPS disruptions are a global concern and provided guidance for reporting to the U.S. Coast Guard.