"[T]he very feature of pension plans that once made them attractive to employers -- those employers' ability to be flexible in their contributions, paying more into the fund to reduce tax liabilities when available cash permitted and paying in only the minimum when finances were tighter -- has produced a situation where the need to cope with an underfunded pension has added to the strain of a troubled company, even to the extent, in this case, of necessitating entering into special agreements with the PBGC in 2015 ... to 'ring-fence' certain assets to satisfy its minimum contribution requirement."  MORE >>