Model-Rocket Bill Stirs Debate (NY): “Legislation pending in the Senate would exempt some model-rocket propellants from toughened restrictions on explosives that were imposed by Congress last year in response to the terrorist attacks of Sept. 11, 2001. The proposed exemption grew out of complaints from rocket hobbyists who said the new regulations would essentially ground them by requiring many users of model rockets to register with the federal government and go through background checks before using certain regulated explosives to launch their rockets.”