MH 370

Submersible to Search for Plane

Search crews are sending a miniature submersible into the Indian Ocean Tuesday in an attempt to determine whether faint sounds detected by an Australian ship are coming from the black box of missing Malaysian Airlines Flight 370. The sub can create a sonar map to chart any debris on the ocean floor. The batteries in the black boxes were expected to expire Tuesday, which would kill the signal and make the search nearly impossible.