Since I'm not a pilot or aircraft owner, I really don't have a direct interest in what if any kind of locater should be required for planes. However, like everybody else I'm a taxpayer and I wonder about the cost of conducting search and rescue operations when the downed aircraft has no locater or one that is ineffective. Most of the AOPA's concern seems to be how much it would cost aircraft owners to install or upgrade ELT to 406 MHz ELT's. What am I missing in their argument?