Caterpillar Inc. has announced it is moving its corporate headquarters from Peoria, Illinois to the Chicago suburb of Deerfield. In making the announcement Wednesday, Caterpillar CEO Jim Umpleby noted the Deerfield headquarters will be minutes from O’Hare International Airport and a convenient rail ride to Chicago. According to the announcement, the heavy equipment maker has reached a leasing agreement at a Deerfield office park and expects to move relocated 100 employees there this year.