(concurring) :
I readily concur, but not on the ground that this case is distinguishable from the credibility problem encountered in NLRB v. Smoky Mountain Stages, 447 F.2d 925 (4th Cir. 1971). I adhere to my belief that Smoky Mountain Stages was wrongly decided for the reasons expressed in my dissenting statement in that case, 447 F.2d at 929.