User blog comment:IamJakuhoRaikoben/Chapter 345: Someone's Voice, Review./@comment-5288632-20130726203251/@comment-7418318-20130726210441

Dragon Slayers have sharper senses than normal Humans. During the GMG he was also the only one who heard Lucy call Asuka's name and thus was able to end the "hostage taking" Flare did.

Also he was closest to the hole.