The tag alias #77264 jet_fighter -> jet is pending approval.

Reason: The tag fighter_jet is already aliased to jet, so jet_fighter should be as well for consistency.

The argument for the other alias consisted of searching for the two tags military jet instead. I see the logic for that since it's pretty unlikely to find posts with both tags where a non-military jet is depicted. You can also search for specific types of jets, such as f-22. See the old discussions here:
topic #4867
topic #9759

If you disagree and think that these should be an implication instead, grouping specific types of fighter jets under the tag, let me know. I wouldn't mind either way, so long as there's consistency and maintainability.