Yes, heard they had one safe, you expect them to be using the transponder to locate the other, there are pictures on the BBC of two choppers circling attached to a refueller, assuming they are waiting for the call and keeping the tanks topped up. I remember going on a course while serving, RM, where the talk was from a pilot who been shot down and had to eject, he mentioned the transponder was automated, as the aircrew could be unconscious. What they highlighted was it is an extremely rare event for a fighter aircrew to eject and it is something the training, any training, does not prepare you for. It was more likely than not the ejecting aircrew would suffer an injury while ejecting, which leads me to think how stressful it must be and the physical pressure on your body, dislocations, whiplash, banging yourself on the cockpit as you eject, etc. I only jumped out of an airplane as prepared to do so and in a controlled manner.
A question on the radio news phone in tonight was, If captured what is the legal status of the aircrew? As this not a 'war' in the conventional sense, self-declared by the US President, therefore not a conventional POW.