Strain/Sprain: A strain is when a muscle has been pulled to its limit, while a sprain is a muscle twisted or turned excessively.
Heat Exhaustion: Exactly how it sounds like; exhaustion from heat. Basically, it's a heat illness that you may obtain after being in intense heat for a long time.
The grand jury works with the prosecutor to decide whether to put criminal charges or indictment against a potential defendant; usually reserved for serious felonies