Auniformed law enforcement officer working in the terminal building of an airline airport, outside the secured area, notices two men who appear middle eastern entering a crowded airport restaurant. both are carrying suitcases. as they pass close by him, they are conversing softly but excitedly in a language he thinks might be arabic. they do not make eye contact with him. can the officer legally: a. stop the pair and question them? explain. b. frisk them for weapons? explain. c. search their bags for explosives? explain.

Adefendant charged with driving while intoxicated pleaded not guilty and insisted on a trial. right before the trial began, he fired his attorney and decided to defend himself. at one point during opening arguments, the defendant began to act like a cat, meowing and chasing an imaginary squirrel out of the courtroom. if no one else raises the issue of the defendant's competency to stand trial, what is the responsibility of the trial judge here? a) the trial judge has no responsibility, because the defendant decided to defend himself. b) the trial judge has no responsibility, because she cannot decide whether the defendant is competent to stand trial. c) the trial judge must raise the issue of competency, because the defendant is representinghimself.d) the trial judge must raise the issue of competency, because the constitution obligates her to do.