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Date: 10/11/2021 To: American Infrastructure Services Attn: Justin Slack From: Rocal, Inc. Subj: PO# 2109-21031002js, Rocal Job 21-FL-153, Project #:08-2020-WFS / Sarasota Airport Wayfinding

Justin,

Rocal is currently experiencing many delays from our supplier base, due to their issues with raw materials and labor shortages. Although our suppliers confirm a delivery date most are running behind. Chief among these are with aluminum substrates and assembly hardware suppliers.

Rocal understands that we are not alone with our suppliers being behind with their deliveries. It is well documented that all industries are experiencing delays within their supply base. We are having weekly communications with our suppliers to understand any developments which can disrupt our commitments to our customers. Rocal will continue to provide progress updates.

Thank you,

C/Blag-

Andrew Blazar, COO