Anti missile shield can be activated during cooldown

Yup, exactly what the topic title says. When you first activate AMS, it shoots down missiles for 10 seconds and then it goes for 40s cooldown. During that 40s cooldown you can activate it again for 10s as you like, icon will be flashing, but it doesnt seem to shoot down missiles (however, not tested). After that 10s icon flashing, cooldown counts from beginning.