The countdown reached zero just as Frank Borman and James Lovell, in Gemini Seven, passed overhead.

VOA: special.2009.07.01

The countdown at Cape Canaveral reached zero as Gemini Seven passed overhead.

VOA: special.2009.07.01

With virtual workers, companies are able to operate with zero unnecessary overhead, often saving over 30%.

FORBES: The New World Of Work: Time To Think Virtually

Because of this line of reasoning, managers or technical leads sometimes over-correct and attempt to maximize efficiency by staffing single-person projects to reduce the communication overhead down to zero.

FORBES: Why And Where Is Teamwork Important?