Requires the Washington state patrol to establish a missing endangered person clearinghouse and implement the same programs used in “amber alerts.” Adds social media to the outlets for issuing such alerts. Endangered person means a person believed to be in danger because of age, health, mental or physical disability, in combination with environmental or weather conditions, or is believed to be unable to return to safety without assistance. (Companion bill: SB 6162).   Official Text and Analysis.