I personally know former SEALs who are also airplane pilots. In that case, you would only need ONE conspirator.
Butterdezillion is talking about her death being faked in which case your SEAL would also have to have taken her to hospital on his own, tried to resuscitate her, perform and sign the autopsy, organise the funeral, arrange for the open casket to contain a dummy Fuddy as we all as filming and ‘photoshopping’ the film for later showing on two TV channels.
How many SEALs do you know who could do that?