Appellant was convicted of being a felon in possession of a firearm following his stipulation to certain facts, including possession of the weapon. He appealed the denial of his suppression motion. The government contended that the stipulation rendered moot the appeal of the suppression ruling, because the court did not consider the statements Larson sought to suppress, only the stipulated facts. Here, the appellate court remanded the case for the district court to determine whether Larson knowingly and intelligently surrendered his appeal of the suppression ruling.