German fire brigades and rescue services use the GAMS-Regel, a memory aid for the first measures at a dangerous incident.
Gefahr erkennen — recognize the hazard.
Absperren — cordon off the area.
Menschenrettung durchführen — rescue people.
Spezialkräfte nachfordern — call in specialist units.
The aim, says the medical encyclopedia DocCheck Flexikon, is not to endanger oneself, the team or others. To recognize the hazard, crews use a second scheme, called 4A-1C-4E. Its letters stand for Atemgifte (toxic gases), Angstreaktion (panic), Ausbreitung (spread), Atomare Strahlung (radiation), Chemische Stoffe (chemicals), Elektrizität, Explosion, Einsturz (collapse) and Erkrankung/Verletzung (illness or injury). In June 2025 a Cologne fire officer wrote a paper on water rescue. He noted that drowning and being swept away cannot be captured by the classic scheme. He cited a proposal to extend it with one more E, for Ertrinken/Wassergefahren, drowning and water hazards.