You know, everything has to be robust  a robust foreign policy, a robust national defense, a robust air attack on Serbia, a robust police crackdown, a robust anti-drug policy, a robust investigation of abuses.
Foreign policy is one of the things that must be robust.
Similarly, available supplies of piping, nozzles, pumps, soot blowers, fans, and other related standard component necessary for SCR, FGD or ACI installations are not expected to present constraints on the ability of facilities to install the technology.