F16's won't give Ukraine much of an advantage until sufficient numbers of pilots are a trained. There are two weapons that could immediately change the battlefield landscape. GLSDB's and ATACM's are long range precision bombs that would allow Ukraine to target Russian supply lines and ammunition stores far behind the front lines, including into Crimea. They both have backup inertial guidance systems in order to mitigate GPS jamming.. which is a big problem for their current guided munitions.