As dark as that moment could have been, The Mandalorian followed it up with a few seconds of chuckle-worthy confusion passing from Mando to Mayfield and then onto the trooper that cluelessly walked into the mess hall.
Dude was probably thinking he was about to sit down for a meal and maybe some coffee to help get him through the day, but he instead got immediately blasted.
To speak again of Valin Hess’ inability to grasp the mood of others around him, he was clearly unaware of Mayfield’s growing anger over their conversation about Operation Cinder, and thus was not set up to avoid being shot to death.