Dropping Bombs

You could maybe add some VFX shots of a bomb, (Or multiple bombs) being dropped from the sky for the scenes where an airplane drops a bomb. It would make compositing Bombs or Nuclear Explosions into your scene, way easier, and with even more realism. Make sure they have a few different angles such as wide, super wide, medium, close-up, and low-angle shots. Make sure they have Multi-Channel EXR passes, so you can change the depth, lighting, texture, etc.