I'm not disputing that.I believe there were a number of objects. At one point there was reference to a fleet.
What I'm calling out Fravor on is the supposed visual identification of this object - unless he has the visual acuity of a peregrine falcon, then he didn't "see" anything.
Even if he did see something he still has no frame of reference to estimate relative size or speed - if the object was 40 ft long then it could not have been at sea level, if the object was that low then it had to be much, much larger.
And, assuming that Fravor saw what he saw and wasn't mistaken on anything, he still implied that the object was actively jamming radar equipment - if it has technology to do that then isn't it also reasonable to speculate that this UFO could also interfere with equipment that determines size, position, velocity and acceleration?
Don't forget, he's already asserted that this object could not have been created by current technology so basically anything goes with regards to its capabilities.