As expected, May 14th is indeed a dark day for LightSquared. The company has just filed paperwork in order to initiate Chapter 11 bankruptcy proceedings in Manhattan's US Bankruptcy Court, effectively killing its dream of providing a high-speed mobile wireless network to upwards of 260 million people. Not quite a year after Sprint and LightSquared put together an agreement that would ensure 15 years of blissful LTE enjoyment together, Philip Falcone's baby looks weaker than ever. With the Sprint tie-up now void, and over $1.6 billion in debt, there's probably not too many places for LS to turn. The primary hurdle -- one it never could seem to overcome -- was the FCC's outright refusal to believe any of the company's mitigation proposals in relation to GPS interference issues. Despite "profoundly disagreeing" and raising all sorts of chaos in an effort to get its way, LightSquared never did manage to convince the powers that mattered. Where it turns from here is anyone's guess, but it won't be a quiet fall from grace, we're surmising.