Can a municipality be held liable for the performance of its employees under the professional judgment rule?

The professional judgment rule insulates a municipality from liability for its employees' performance of their duties " 'where the ... conduct involves the exercise of professional judgment such as electing one among many acceptable methods of carrying out tasks, or making tactical decisions' " ( McCormack v. City of New York, 80 N.Y.2d 808, 811, 587 N.Y.S.2d 580, 600 N.E.2d 211 [1992], quoting Kenavan v. City of New York, 70 N.Y.2d 558, 569, 523 N.Y.S.2d 60, 517 N.E.2d 872 [1987] ). Immunity under the professional judgment rule

[15 N.Y.3d 681]