Bloomberg is citing anonymous sources as saying that it’s very possible the Justice Department will launch an anti-trust lawsuit against Google, blocking its proposed purchase of a software company called ITA. ITA makes software that provides online flight and ticket information for popular travel sites like Expedia and Travelocity. Some of those companies have been complaining for a while that if Google owned ITA, they could refuse to share its data, or slow down or hamper the data, and instead launch a travel site of its own right out of its search results.