WEAPONS AND TACTICS INSTRUCTOR Many air and ground assets with the 3rd Marine Aircraft Wing participated in the Weapons and Tactics Instructor (WTI) course 2-16 aboard MCAS Yuma, Ariz., during the months of March and April 2016. The seven-week-long course, hosted by Marine Aviation Weapons and Tactics Squadron One (MAWTS-1) cadre, practiced integrating the six functions of Marine Corps aviation, which will support a Marine Air Ground Task Force during future missions. | MCAS Miramar

2.6K views · 81 reactions | Tyrannosaurus rex had famously tiny arms and scientists aren't entirely sure why. There are lots of ideas - Museum scientist Kieran Miles explains some of them. But what do you think T. rex used its arms for? Share your best theories in the comments  | Natural History Museum, London | Facebook