My apologies. The book is Wild Card by Raymond Hawkey. Premise very close to "The Flying Saucer." Thanks again!
--Here's a book review --
"The premise of the story is that, in a time of societal disintegration with terrorists setting off nukes in DC and the world descending into anarchy, the President and his Science Advisor cook up a plan to "rally the world" against a new foe - alien invaders. To do this, they assemble an elite team of scientists to create a (fake) flying saucer with dead occupants (bio-engineered) and crash this saucer into LA, killing 10,000 people. The saucer and its occupants have to be scientifically believable, as they expect world experts to study the crash site (and verify the alien event). The President hopes this event, this external threat, will cause the world to stop destroying itself and realize its us humans against them, the aliens. The book details the steps the secret scientific team take to build a believable saucer and occupants."