Agents can achieve glory in different ways during the course of their shift. Being able to work outdoors, and watching the sun melt into the soft sand of the desert during a sunset is awfully glorious. Helping a hurt crosser receive medical attention is another way of getting a hold of a little glory. Preventing drugs or other illegal goods from entering the country has glory written all over it.
It's important to be able to savor the glorious moments in your job, because the work can wear on you. Just don't sit there, staring off into the sunset savoring those moments while an illegal takes advantage of your distraction by tiptoeing past you.