The resident USAF pilot in my Prowler squadron intercepted a pair of Bears in a T-33 one time, unarmed of course, could barely keep up to them much less intercept them but he did.
Those things are freakin fast. There was a discussion among stars that I got tangentially drawn into regarding using P-3s to assist in interception of Bears. I politely informed them that we could neither fly as high or nearly as fast as they could...