So he showed up for work without a hat, becoming the first to break his own rule.

He revealed his membership to the press in 1940, becoming the first AA member to break their anonymity on a national level.

"The list becomes an incentive for schools to break their molds," Jackson said.

In 1981, Kulikov lowered his own 500 m world record once more, becoming the first man to break the 37-second barrier.

He stood four under par for his first 11 holes, becoming the first to break 70 with a 69.

If he did so, he would become the only back in the history of pro football to break the 1,000-yard barrier without a 100-yard game.

The film showed the historic flight of the X-1 becoming the first aircraft to break the sound barrier.

This motorcycle became the fist electric vehicle to break 200 mph in the quarter mile.

This is becoming an easy habit to break.

In later challenges the cryptograms become harder to break.