In this subchapter:
(1) "Alert" means the statewide silver alert for missing senior citizens and persons with Alzheimer's disease, as developed and implemented under this subchapter.
(2) "Local law enforcement agency" means a local law enforcement agency with jurisdiction over the investigation of a missing senior citizen or person with Alzheimer's disease.
(3) "Senior citizen" means a person who is 65 years of age or older.