Star Trek Into Darkness won't be released in North America to general audiences until May 17th.
Read at your own risk.
- You may also be looking for the informal verbal alert "Brace for impact" used commonly in the 24th century.
The viewscreen of the USS Kelvin notified Captain George Kirk of an impact alert with the Narada after Kirk had set the Kelvin on a collision course with the enemy vessel. Twenty five years later, an impact alert was declared on the bridge of the Enterprise when it warped right into a debris field of its fleet. (Star Trek)