Held that the National Labor Relations Board was not entitled to preliminary injunctive relief directing two hospitals to bargain in good faith with a labor union representing nurses and take other actions. The NLRB argued that the district court ought to have granted its request for a preliminary injunction under section 10(j) of the National Labor Relations Act. Finding no abuse of discretion, the Fourth Circuit explained that the Board had not demonstrated that the effectiveness of its remedial power would be in jeopardy unless a preliminary injunction were imposed.