<https://slipnot.com/case-studies/punched-plank-catwalk-air-force/#webpage>
<http://schema.org/description>
"SlipNOT® supplied aluminum punched plank for a United States Air Force catwalk. The Air Force required a material that was lightweight and corrosion resistant."
<https://slipnot.com/case-studies/punched-plank-catwalk-air-force/>