The beer is flowing, the bratwurst and pretzels are plentiful and the lederhosen is in full bloom — but then the worst happens. Someone has one sausage too many and is in cardiac arrest. With so many people crowding around the casks, there's no way for the paramedics to get here in time.

Then, descending from the heavens, appears a drone. Onboard is a life-saving defibrillator which kickstarts your fallen comrade's heart, averting disaster. Quick as it can, the drone once more takes to the skies, like a miniature, prop-driven Superman.