This seems like a serious issue of security concern. Here are a few things that could happen:
1. Investigation: The military will most probably launch an immediate investigation into the incidents, trying to discover who the drones belong to and why they were flying over these particular US Air Force bases.
2. Increased Security Measures: In response to such incidents, security measures will likely be increased to monitor and control the airspace over and around military bases more thoroughly.
3. Domestic or International Response: Depending on the nature of the investigation’s findings, a domestic or international response may be needed. This could involve diplomatic conversations, new laws, or even retaliation if a malicious intent is deduced.
4. Technology Upgrades: Incidents like this also often lead to upgrades in technology. There could be more research and development in detecting and deterring drone flights over restricted zones.
5. Collaboration between nations: If the incident is deemed to be a threat to the national security of the US or Britain, it can result in increased collaboration and joint efforts between the two nations to prevent such occurrences in the future.
In all, without knowing who is behind the drones, it’s difficult to predict exactly the outcomes of such a situation. Be sure to check with reliable news sources for updates about the situation.