Fighter jets are 'worthless' over Ukraine, and it's a sign of what US pilots and troops may face in future battles

• Neither Russian nor Ukrainian aircraft have been able to establish air superiority over Ukraine.
• As a result, neither side is able to provide close air support to its troops on the front line.
• US pilots and ground troops may face a similar situation in future wars, US Air Force leaders say.

After a year of fighting, neither the Russian nor Ukrainian air forces have been able to take control of the skies over Ukraine. That has severely limited the role of their fighter jets, and it's a preview of what US troops could face in the future, US Air Force officials say.