1.   Federal guidelines require that tower personnel clearing aircraft for arrivals and departures have clear views of runways below them.

2.   Guidelines require that an expiration date appear on every page of an Internet-Draft.

3.   Also, the guidelines required the embryos to have been already frozen for storage.

4.   And for investors who believed that analysts downplayed the risks in some stocks, the guidelines require that valuations and risks of securities be explicitly described.

5.   Architectural guidelines require that only traditional houses be built.

6.   But the guidelines do not require all institutions to employ full-time interpreters.

7.   CDC guidelines require sufficient chlorine levels in medical tubs and recommend that they be drained and disinfected between patients, Arduino said.

8.   Federal Trade Commission guidelines require retailers to disclose at store counters and in advertising that diamond weights are approximate.

9.   Federal guidelines do not require testing within a particular time frame, so this radioactive element decayed before it could normally be detected.

10.   Federal guidelines require plants to be able to withstand impact by airborne objects, including missiles.