I highly recommend the book Eccentric Orbits: The Iridium Story by John Bloom. The story of how Iridium came to be and how difficult it was to keep Motorola from literally destroying the whole constellation (which they had originally built!) is quite fascinating.

Tidbit: Author is also the real-life person behind the comedic persona Joe Bob Briggs. If you ever lived in Texas you know that name. And yes the guy can write seriously good nonfiction.