FlyHigh Hot Air Balloon Adventures is a firm with its operations based in a U$.$S$.$ state that has legalized the recreational use of marijuana. Norman is a full$-$time employee of the firm and works as a balloon "pilot" and tour guide. One day, Norman's boss observes Norman smoking in his car before work and believes he smells marijuana when Norman walks inside the building. Which of the following actions by Norman's boss would be the most appropriate from a practical and legal standpoint in this situation?