How to break it off with someone you're casually dating - break - Dictionary of English

It looks like there are more than 14 pistons, because the area in the 3 photos overlap. 
It's 3 segments of a panorama photo to give you multiple views of this extraordinarily rare collection.

The pistons have been stacked for display purposes only, they aren't going back into engines. Always be super careful when handling pistons, as the aluminum is soft and very easily dented, causing combustion leakage, and friction ... neither of which is good for power.

As in any museum, some of the specimens are better examples than others,  but the point is that none have any leakage past the top ring, because they were all broken in  by the method described here !
The only impossible thing about these pistons ... is that it's impossible to achieve this result with an easy break-in.

A young FBI agent infiltrates an extraordinary team of extreme sports athletes he suspects of masterminding a string of unprecedented, sophisticated corporate heists.

"When people in the military have a gym they will work out in the gym. When they are on the side of a mountain they will make do with what they have and do push-ups to stay in shape,” Jha says. “Mindfulness training may offer something similar for the mind. It's low-tech and easy to implement." In her own life, Jha looks for any and all existing opportunities to practice mindfulness, such as her 15-minute trip to and from work each day.

Likewise, Michael Taft advocates deliberate mental breaks during "all the in-between moments" in an average day—a subway ride, lunch, a walk to the bodega. He stresses, though, that there's a big difference between admiring the idea of more downtime and committing to it in practice. "Getting out into nature on the weekends, meditating, putting away our computers now and then—a lot of it is stuff we already know we should probably do," he says. "But we have to be a lot more diligent about it. Because it really does matter."

How to break it off with someone you're casually dating

How to break it off with someone you're casually dating