From 1996 Yorktown was used as the test bed for the Navy's Smart Ship program. The ship was equipped with a network of 27 dual 200 MHz Pentium Pro based machines running Windows NT 4.0 communicating over fiber-optical cable with a Pentium Pro based server. This network was responsible for running the integrated control center on the bridge, monitoring condition assessment, damage control, machinery control and fuel control, monitoring the engines and navigating the ship. This system was estimated to save $2.8 million per year by reducing the ship's complement by 10%.In September 21, 1997 while on maneuvers off the coast of Cape Charles, Virginia, a crew member entered a zero into a database field causing a divide by zero error in the ship's Remote Data Base Manager which brought down all the machines on the network, causing the ship's propulsion system to fail.Anthony DiGiorgio, a civilian contractor with a 26-year history of working on Navy control systems, reported in 1998 that the Yorktown had to be towed back to Norfolk Naval Station. Ron Redman, a deputy technical director with the Aegis Program Executive Office, backed this claim up, suggesting that such system failures had required Yorktown to be towed back to port several times.
Where did you educate the biology, in toulet?
Time is never wasted when you're wasted all the time
tl;dr
Here's an explanation for ya. Lurk moar. Every single point you brought up has been posted, reposted, debated and debunked. There is a search function on this forum, and it is very easy to use.
30,000 feet isn't very high. It's certainly possible to breath.