This roundtheclock surveillance would be impossible without the tremendous aid ARS receives from other Federal agencies. such as the U.S. Customs. Immigration. Postal. and Public Health Services. ARS inspectors also see that our agricultural exports meet the requirements of the country receiving them. Varied new problems continue to crop up. For example. the boats and airplanes carrying Cuban refugees to Florida. and the luggage they bring. are regularly searched for foreign plant pests. ARS representatives also work with the National Aeronautics and Space Administration in planning the handling and disposal of soil and rock samples that may be brought to earth from the moon or from planets. Unless precautions are taken. pests. diseases. and other plagues from outer space could conceivably stow away on spacecraft returning to earth and then multiply unchecked in an atmosphere that could not control them.
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Immigration refugees