Terroristic threats involve making a threat of inducing serious injury, death, terror or serious physical property damage.
First, the person usually makes this threat in writing or verbally, however the threat does not have to be explicit. A person can make a threat even with body language. Some state laws require that a person say the statement verbally.
The person also must specifically threaten serious injury or death. The threat also must be reasonable in order to qualify as a terrorist threat. It isn’t necessary for the threat itself to cause someone else to feel scared or terrorized. The actions of the person accused are what determine whether they have committed this crime.