they conducted these challenging rescues in beaumont. they say trying to spot people from above is like finding a needle in a haystack. watch this. >> they just believe they have somebody who has been waving to them. it's a confusing situation now. they can't tell for sure if this is somebody who wants to be rescued or not. the rescue diver is ready to go down if necessary. but they're trying to figure out exactly -- it's one of the difficultition these coast guard crews are having, is just the lack of communication. they get information based on 911 calls, but a lot of the people that they've been rescuing, they just see, they get a visual on and they hover over the area, give them a thumbs up or a thumbs down to get an indication of whether they need to actually be rescued. >> so these two folks right hrer