Kroll Bond Rating Agency Assigns Long-Term Rating of BBB+ with a Stable Outlook to the City of Chicago General Obligation Bonds – Project and Refunding Series 2017A, and Taxable Project Series 2017B )–Kroll Bond Rating Agency has assigned a long-term rating of BBB+ with a Stable outlook to the City of Chicago General Obligation Bonds – Project and Refunding Seri… )–Science Applications International Corp. today announced that Karen Wheeler will become SAIC’s new chief human resources officer, effective Feb. 4, 2017.