yesterday a lot better. but our philosophy is we take a balanced approach to use the optimal range of our sensors. if the optimal sensor is the radar they will go heavy on using the radar. however, if the environment dictates that the visual search would be more productive, they'll lean forward that more. so we do use a balance. that's what the air crew does. they're experts in that. and it just depend on the environment, depend on the day. >> we're looking at some video of australian forces flying low and dropping some items into the water. do you know what those would be? i don't know if -- they're obviously some sort of sensor devices. what would they be putting in the water? >> so those are sonobuoys. i get that question a lot, are we pinging underneath the surface for water or are we looking submerged? really what those were doing was to get a sense of the environmental conditions