keywords: shoes crawlers crawler tread nasas
text: Crawler #39;s New Shoes to Help Space Shuttle Move Toward Return to &lt;b&gt;...&lt;/b&gt; NASAs two crawler transporter vehicles soon will sport new shoes. A \$10 million project to replace the 456 tread belt shoes, weighing more than one ton each, on both crawlers at Kennedy Space Center begins mid-October.