criminal.activity, furtive hand movements, and flight. See, e.g., Anderson v. United States, 658 A.2d 1036, 1038 (D.C. 1995). In the present cáse, the anonymous 911 caller indicated that he had seen a man with a gun in his waist and provided specific descriptions of that man and the man’s companion. Officers who responded found Mr. Wade and a companion about a block away, and both men matched the descriptions provided by the 911 caller. When the offícérs approached the men, both fled, and Mr. Wade discarded a cellphone and placed his hand near his waist, just where the 911 caller said a gun would be. Taken together,' these circumstances provided the officers with reasonable artic-ulable suspicion to seize Mr. Wade. Cf., e.g., Jackson v. United States, 109 A.3d 1105, 1106-09 (D.C. 2015) (<HOLDING>); Brown v. United States, 97 A.3d 92, 96 (D.C.
holding an anonymous tip had the requisite indicia of reliability to justify a stop when the caller told the police of the alleged erratic driving automobile location and vehicle description holding that stop of appellant was supported by reasonable articulable suspicion where anonymous 911 caller said that she had seen suspect pull gun out of his pocket 911 caller described suspect and suspects location responding officer located appellant near stated location appellant matched description and no one else in vicinity matched description holding that stop of suspect was supported by reasonable articulable suspicion where anonymous 911 caller described man with a gun officers saw suspect walking with man who matched description provided by 911 caller suspect made nervous and evasive motions incident occurred in highcrime area and suspect attempted to flee holding that reasonable suspicion existed where suspect described location of his vehicle over phone to undercover officer holding that an anonymous tip that described a suspects appearance and location and alleged that he was carrying a concealed weapon was insufficiently corroborated by the officers observation of the appellant who matched the description hanging out at the indicated location