item 2 . properties at december 31 , 2017 , we owned or leased building space ( including offices , manufacturing plants , warehouses , service centers , laboratories and other facilities ) at approximately 375 locations primarily in the u.s . additionally , we manage or occupy approximately 15 government-owned facilities under lease and other arrangements . at december 31 , 2017 , we had significant operations in the following locations : 2022 aeronautics - palmdale , california ; marietta , georgia ; greenville , south carolina ; and fort worth , texas . 2022 missiles and fire control - camdenarkansas ; ocala and orlando , florida ; lexington , kentucky ; and grand prairie , texas . 2022 rotary andmission systems - colorado springs , colorado ; shelton and stratford , connecticut ; orlando and jupiter , florida ; moorestown/mt . laurel , new jersey ; owego and syracuse , new york ; manassas , virginia ; and mielec , poland . 2022 space - sunnyvale , california ; denver , colorado ; valley forge , pennsylvania ; and reading , england . 2022 corporate activities - bethesda , maryland . the following is a summary of our square feet of floor space by business segment at december 31 , 2017 ( in millions ) : owned leased government- owned total .
what percentage of square feet of floor space by business segment at december 31 , 2017 are in the aeronautics segment?
we believe our facilities are in good condition and adequate for their current use.wemay improve , replace or reduce facilities as considered appropriate to meet the needs of our operations . item 3 . legal proceedings we are a party to or have property subject to litigation and other proceedings that arise in the ordinary course of our business , including matters arising under provisions relating to the protection of the environment and are subject to contingencies related to certain businesses we previously owned . these types of matters could result in fines , penalties , compensatory or treble damages or non-monetary sanctions or relief . we believe the probability is remote that the outcome of each of these matters will have a material adverse effect on the corporation as a whole , notwithstanding that the unfavorable resolution of any matter may have a material effect on our net earnings in any particular interim reporting period . we cannot predict the outcome of legal or other proceedings with certainty . these matters include the proceedings summarized in 201cnote 14 2013 legal proceedings , commitments and contingencies 201d included in our notes to consolidated financial statements . we are subject to federal , state , local and foreign requirements for protection of the environment , including those for discharge ofhazardousmaterials and remediationof contaminated sites.due inpart to thecomplexity andpervasivenessof these requirements , we are a party to or have property subject to various lawsuits , proceedings and remediation obligations . the extent of our financial exposure cannot in all cases be reasonably estimated at this time . for information regarding these matters , including current estimates of the amounts that we believe are required for remediation or clean-up to the extent estimable , see 201ccriticalaccounting policies - environmental matters 201d in management 2019s discussion and analysis of financial condition and results of operations and 201cnote 14 2013 legal proceedings , commitments andcontingencies 201d included in ournotes to consolidated financial statements . as a u.s . government contractor , we are subject to various audits and investigations by the u.s . government to determine whetherouroperations arebeingconducted in accordancewith applicable regulatory requirements.u.s.government investigations of us , whether relating to government contracts or conducted for other reasons , could result in administrative , civil , or criminal liabilities , including repayments , fines or penalties being imposed upon us , suspension , proposed debarment , debarment from eligibility for future u.s . government contracting , or suspension of export privileges . suspension or debarment could have a material adverse effect on us because of our dependence on contracts with the u.s . government . u.s . government investigations often take years to complete and many result in no adverse action against us . we also provide products and services to customers outside of the u.s. , which are subject to u.s . and foreign laws and regulations and foreign procurement policies and practices . our compliance with local regulations or applicable u.s . government regulations also may be audited or investigated . item 4 . mine safety disclosures not applicable. .