When is a brief stop of a suspicious individual most reasonable?

When there is a basis for detention, "[a] brief stop of a suspicious individual, in order to determine his identity or maintain the status quo momentarily while obtaining more information, may be most reasonable in light of the facts known to the officer at the time." (Adams v. Williams (1972) 407 U.S. 143, 146, 92 S.Ct. 1921, 1923, 32 L.Ed.2d 612.)

At the outset, we recognize that defendant manifested and possessed a reasonable expectation of privacy in the contents of his wallet contained in his pocket (cf. United States v. Monclavo-Cruz (9th

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