Warner Bros. and Yahoo have released a brand new “Green Lantern” trailer featuring a ton of new footage of Hal Jordan (Ryan Reynolds) along with the Guardians who head and created the Green Lantern Corps. It also reveals a training scene with Sinestro (Mark Strong) and Kilowog (Michael Clarke Duncan) training Hal and we get to hear Kilowog speak for the first time. Check it out below and let us know what you think of this new trailer.