The continuing search for Flight 370
1 / 25
A woman stands in front of a placard featuring messages for passengers aboard a missing Malaysia Airlines plane at Kuala Lumpur International Airport in Sepang, Malaysia, Wednesday, March 12, 2014. More than four days after the Malaysian jetliner went missing en route to Beijing, authorities acknowledged Wednesday they didn't know which direction the plane carrying 239 passengers was heading when it disappeared, vastly complicating efforts to find it. (AP Photo/Lai Seng Sin)