Interestingly, there is no description of what Suppressive Fire does in the NOW Core Rulebook. It's obliquely referenced in a few places, but what it does and how to do it seems to have been left out inadvertently. Thankfully, the WRRD has some of the missing info. However, it doesn't say if Suppressive Fire requires one or two actions. When reviewing somewhat related actions, any auto weapon can be used to attack a 30' cone, for example, and this requires two actions. The Spray Universal Exploit also requires two actions, but Strafe only requires one action. So for my game session this afternoon, I'm going to say that Suppressive Fire only requires one action since usually things that require two actions are called out. But I'd be curious to hear if there is an official ruling, or in the absence of that, at least hear what my fellow WOIN NOW GMs and players think.