the following is a summary of our floor space by business segment at december 31 , 2010 : ( square feet in millions ) owned leased government- owned total .
what portion of the total floor space is used by aeronautics?
some of our owned properties , primarily classified under corporate activities , are leased to third parties . in the area of manufacturing , most of the operations are of a job-order nature , rather than an assembly line process , and productive equipment has multiple uses for multiple products . management believes that all of our major physical facilities are in good condition and are adequate for their intended use . item 3 . legal proceedings we are a party to or have property subject to litigation and other proceedings , including matters arising under provisions relating to the protection of the environment . we believe the probability is remote that the outcome 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 quarter . we cannot predict the outcome of legal proceedings with certainty . these matters include the proceedings summarized in note 14 2013 legal proceedings , commitments , and contingencies beginning on page 78 of this form 10-k . from time-to-time , agencies of the u.s . government investigate whether our operations are being conducted in accordance with 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 , or could lead to suspension or debarment from future u.s . government contracting . u.s . government investigations often take years to complete and many result in no adverse action against us . we are subject to federal and state requirements for protection of the environment , including those for discharge of hazardous materials and remediation of contaminated sites . as a result , we are a party to or have our property subject to various lawsuits or proceedings involving environmental protection matters . due in part to their complexity and pervasiveness , such requirements have resulted in us being involved with related legal proceedings , claims , 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 201ccritical accounting policies 2013 environmental matters 201d in management 2019s discussion and analysis of financial condition and results of operations beginning on page 45 , and note 14 2013 legal proceedings , commitments , and contingencies beginning on page 78 of this form 10-k . item 4 . ( removed and reserved ) item 4 ( a ) . executive officers of the registrant our executive officers are listed below , as well as information concerning their age at december 31 , 2010 , positions and offices held with the corporation , and principal occupation and business experience over the past five years . there were no family relationships among any of our executive officers and directors . all officers serve at the pleasure of the board of directors . linda r . gooden ( 57 ) , executive vice president 2013 information systems & global solutions ms . gooden has served as executive vice president 2013 information systems & global solutions since january 2007 . she previously served as deputy executive vice president 2013 information & technology services from october 2006 to december 2006 , and president , lockheed martin information technology from september 1997 to december 2006 . christopher j . gregoire ( 42 ) , vice president and controller ( chief accounting officer ) mr . gregoire has served as vice president and controller ( chief accounting officer ) since march 2010 . he previously was employed by sprint nextel corporation from august 2006 to may 2009 , most recently as principal accounting officer and assistant controller , and was a partner at deloitte & touche llp from september 2003 to july 2006. .