One Thing to Remember About the Missing Malaysia Airlines Jet

Exactly one week ago on Friday, a plane took off from Malaysia’s Kuala Lumpur International Airport, intending to ferry 239 people to Beijing. But it never arrived. The Boeing 777-200ER vanished from radar systems one hour later and hasn't been seen or heard from since.

Twelve countries are involved in an "unprecedented" search effort spanning 35,800 square miles, and that search area continues to expand. Family members of the missing, growing increasingly frustrated, are camped out at hotels in Kuala Lumpur and Beijing.

As we head into the weekend with no definitive signs of the missing jetliner, you're sure to encounter plenty of people discussing the whereabouts of Malaysia Airlines Flight 370. So here's the one thing you need to know: Read more...