So, Smart Missile Launchers have a blast ammo. They also have anti-material. Some missions have objectives that can be targeted by long-ranged anti-material weapons ( Supremacy, for example) Can I target a unit that is sitting besides a destroyable objective and blast him with a SML? Is the objective affected ( since its inside the blast radius and the weapon has the anti-material trait)? Can I target the objective to destroy it and the blast kill a enemy that happens to be too close?
You can target an enemy model and catch a scenery item in the blast. You cannot target a piece of scenery and catch an enemy model in the blast. http://infinitythewiki.com/en/Scenery_Structures
Also important to remember that the objectives in most/all missions are immune to damage the first game round and that they aren't troopers so you can't put them in targeted state.