c, or the speed of light, is the speed of which photons travel in a vacuum, A.K.A. the fastest speed in the universe.
To travel at/exceed this speed would result in breaking the fabric of space-time.
c = 299,792,458 meters per second = 671,000,000 miles per hour
The new spaceship, Exr-C2 can travel at 0.6 * c (light-speed), or 60% of the speed of light.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.