Magnus has built an as-of-yet unnamed (Magnus is accepting suggestions for names here) multirole fighter (multirole fighters are capable of ground attack, and thus are fall into the category of fire support) inspired by real-life multirole fighters such as the American F-16 Fighting Falcon and F-35 Lightning II, and the Swedish JAS-39 Gripen. While aesthetically it's quite reminiscent of the Gripen and sports a camo scheme that reminds me of the Gripen's predecessor, the Viggen, it incorporates a VTOL system that's very similar to that of the Lightning II. To fully appreciate the amount of detail and working features that Magnus has packed into the relatively small fighter, I encourage you to browse its photo set on flickr.
Aleks, on the other hand, opted to build a self-propelled howitzer inspired by the prototype Koalitsiya-SV, an artillery piece based upon the Msta-S, the primary self-propelled howitzer of the Russian military. As always, he has managed to fuse a piece of real-life hardware and an impressive, techobabble-laced writeup into a very believable finished product. His attention to detail really shows through on this model, so be sure to browse the photo set for the creation on flickr.