Facing the stiffest airborne resistance to date, "Shangri-La"s airmen suffered their heaviest casualties. The L-direction is the strongest and the stiffest direction. The stiffest tubular frames have a fully triangulated external bracing truss. Even the stiffest of rock is not perfectly rigid. At that time, it was among the stiffest penalties in NHL history. This sentence was the stiffest given so far under the Act. The sentence was the stiffest given so far under the Anti-Terrorism Act. Closed loop vertical slide saws are the stiffest, but also the most expensive machines. The stiffest competition would be from Fred Duesenberg. The competition that year is known as one of the stiffest piano competitions in history. Suction pressure forces concentrate on the rings, as they are the stiffest element present. Steiner- two of the stiffest workers in wrestling at the time. In a structure, the main portion of the load is transferred through the stiffest route. However, the show's stiffest weekly competition came from CBS's newsmagazine "60 Minutes".