That was Yoshimi Ozaki, the silver medalist. The men's 3000mSC national record holder Yoshitaka Iwamizu ran after and gave her the bottle she missed. He was wearing the national uniform and was at the fluid station, so I assume he was part of the offical fluid station crew for the Japanese team. He also got her the bottle before the end of the official fluid station area. Dodgy, but probably legal.
Has to be a better way wrote:
As to your other question, in the Womens marathon, one of the leading women missed or dropped her special bottled at one of the water stops. Someone at the water stop, don't know who handles these stops (volunteers or officials)came around the table, picked up the runners bottle and chased after her for about 20 to 30 meters and gave her the bottle. At no time did the runner stop and go back for her bottle...it was run to her. Isn't this an unfair assist? The runner should have at least had to pick up a "normal" bottle due to her failure to grab her own bottle.