mystery. >> it is a mystery. everybody is curious about it. at the end of the day it is these families that matter so much. it's hard to see what they're going through. anna coren, great story. thank you so much. while malaysian officials say they are still committed to finding flight 370, australian prime minister tony abbott says the search simply cannot go on forever. >> can't go on forever, but as long as there are reasonable leads the search will go on. we've got 60,000 square kilometers that is the subject of this search. if that's unsuccessful, there's another 60,000 square kilometers that we intend to search. as a segue, we're reasonably confident of finding the plane. >> let's bring in cnn aviation analyst and former inspector general of the u.s. department of transportation, mary schiavo. thank you for joining us. what's your reaction to the