The council said it had struggled to cope with a rise in demand for its services, which it had found "challenging".
The other three have found challenge and satisfaction in jobs they never expected to hold back when they thought they were preparing for what physicist Laura Smoliar, CEO of a Silicon Valley start-up called Mobius Photonics, terms "the textbook research career".
While there have been times Lovitt has found it challenging to find any humor in such a scary situation, he ultimately recognizes that humor has helped the Jewish people survive through the most menacing times.
Random molecular motion is also an essential factor in the explanation of diffusion, a concept that has been found challenging for students (Friedler et al., 1987; Odom, 1995).
But even on the security front, Mr. Netanyahu has found himself challenged, with his critics accusing him of fraying Israel's ties with its most crucial ally, the United States, over the Iranian issue.
But that whole market has found itself challenged by slim operating margins, its initial popularity waning, and the difficulties of building a large-scale e-commerce operation.
The Hungarian government has found itself challenged by the crisis.
The county is now designing the stations, and it has found some challenges.
More recently, Ms. Wall Spitzer said, she has found sufficient challenges in running her foundation, Children for Children, which provides programs for young people to participate in community service.
