Icing?
The Guardian carries a Raytheon electro-optical and infrared turret similar to the Predator B but with Raytheon SeaVue radar under its belly, offering persistent target acquisition and tracking capabilities and 30h endurance for maritime operations. New features slated for first use on the Guardian include an electromagnetic expulsion de-icing system for wing and tail leading edges, an onboard traffic alert and collision avoidance system, a laser altimeter-based landing guidance system for pilots at altitudes below 100ft (30m), and a Jeppesen electronic flight bag for mission planning and weather information in the ground control station.
But, hey, let's not bother spending 100s of millions developing this because the (ex) boys from Kinloss say it can't be done...
