Here's video of a new report, in which they interviewed the Producer of the movie, They say the scene they are shooting on that highway, Is an opening sequence in the sequel, There are no Ninja Turtles on this scene, So its definitely Foot Soldiers.
http://wivb.com/2015/05/08/ninja-tur...er-filmmakers/
The reporter says, They will be filming something with a Helicopter, It may show someone jumping out, Or into a Helicopter.