1.   Within hours of the explosions, the two American submarines radioed messages back to fleet headquarters.

2.   Prudencio Sardena, the duty radio operator in the southern Philippine coast guard district, said a similar message was radioed last Saturday.

3.   The Altair, a commercial fishing boat found Saturday, was last heard from Thursday during a storm, when it radioed a message for help.

4.   Greenpeace members tried to radio a message to the French ship.