On March 8, 2014, Malaysia Airlines Flight 370 veered off course after it left Kuala Lumpur and soon vanished. It seems impossible that with modern technology, the cooperation of several countries, and tens of millions spent on search costs, the plane would simply vanish, never to be found. Dozens of planes, submersibles and ships searched in vain for the Boeing 777, but not a trace has been found.
Hopes for finding the flight mostly depended on locating the airplane's "black box," equipped with an electronic pinger that sends out a regular sound signature.
Unfortunately, the batteries died after three months, and early pings detected by the U.S. Navy were later determined to be false alarms that wasted precious time. The search for the missing plane was plagued by problems from the beginning, with erroneous information sending teams from one search area to another and another.
To this day many questions remain: Were the pilots on a suicide mission, and if so, why? Did a mechanical failure cause the plane to go down? The search continues and though it's likely that this mystery will be solved one day, it may take months or years longer.