These "light" losses – compared with those suffered in the great air raids on Dresden, Hamburg, Pforzheim and other German cities – according to expert opinions stem from various factors. For one thing, Braunschweig lay on the direct flight path, that is, the "lane" leading to Magdeburg and Berlin, and right near the armament industry centres of Salzgitter (Hermann-Göring-Werke) and Wolfsburg (Volkswagen Works), meaning that Braunschweigers were used to – even in a sense "trained for" – quickly responding to alarms (there were 2,040 warnings and 620 air raid alarms between 1939 and 1945). This may have prepared them for the attack, even though many of the earlier attacks from which they had sought shelter actually targeted the other cities mentioned. Furthermore, the city also had at its disposal a great number of the latest type of air raid bunkers and blockhouses known as "Hochbunkers". Lastly, the fire brigade's "water alley" alone saved 23,000 people's lives.