Tenant, at its cost, shall maintain fire and extended coverage property insurance on the building for replacement value, public liability, and property damage insurance w ith a liability limit of $5,000,000 combined single limit insuring against all liability of Tenant and its authorized representativ e s arising out of and in connection with Tenant's use or occupancy o f Premises. All public liability insurance and property damage insurance shall insure performance by Tenant of the indemnity provisions of Section 10 . Both parti es and mortgagees s hall be named as additional insureds, and th e poli cy s hall contain cross­ liability endorsements.