ocean shield is towing this pinger locater searching for flight night. my experts are back to answer your questions for you. this tweet is for david. it says will the extreme cold of the deep ocean help pinger batteries last longer? any mathematical estimates from your experts? >> i don't think it will. it is supposed to go 30 days. it has a buffer but that includes the testing at cold, hot, whatever temperatures, but not hot hot temperatures, of course. but normal operating temperatures. the cold temperatures don't extend it. >> we have this the e-mail from pat sutton. she said earlier today, miss schavio said earlier flight has