Is sufficient evidence sufficient to convict Schleining of possession of a pipe bomb?

Schleining claims the evidence was insufficient to establish that he had constructive possession of the pipe bomb. Sufficient evidence to support a conviction exists if "a reasonable jury, after viewing the evidence in the light most favorable to the government, could have found the defendants guilty beyond a reasonable doubt of each essential element of the crime charged." United States v. Hernandez, 876 F.2d 774, 777 (9th Cir.), cert. denied, 110 S.Ct. 179 (1989) (citation omitted); Jackson v. Virginia, 443 U.S. 307, 319 (1979).