the exemption is to be narrowly construed. Davis v. Central Intelligence Agency, 711 F.2d 858, 861 (8th Cir. 1983), cert. denied, 465 U.S. 1035, 104 S. Ct. 1307, 79 L. Ed. 2d 705 (1984). When an agency seeks to withhold release of government documents under this exemption, th...