Item 2. Properties

We operate 128 manufacturing plants and related facilities in 14 countries, of which approximately 34% are in the U.S. We own approximately 56% of our executive and corporate buildings, with 94% located in and around Corning, New York. We also own approximately 62% of our sales and administrative office square footage, 85% of our research and development square footage, 61% of our manufacturing square footage and 7% of our warehousing square footage.

Manufacturing, sales and administrative, research and development facilities and warehouse facilities have an aggregate floor space of approximately 55.6 million square feet. The following table presents the distribution of this total area:

Total assets and capital expenditures by reportable segment are included in Note 18 (Reportable Segments) in the accompanying notes to the consolidated financial statements. Information concerning lease commitments is included in Note 8 (Leases) in the accompanying notes to the consolidated financial statements.