I guess a more direct analog to the original link would be https://archive.org/download/FDNYforcibleEntryReferenceGuide... , which will take you directly to the PDF and provides the load-balanced benefits.

I linked to the item's main page, which has other download options for different e-readers, metadata, etc, in addition to the bookreader interface (which provides additional options like Read Aloud and Search Inside (and it's open source! https://github.com/internetarchive/bookreader ).