An Act amending the act of October 6, 2005 (P.L.319, No.59), entitled, "An act amending the act of June 24, 1976 (P.L.424, No.101), entitled, as amended, 'An act providing for the payment of death benefits to the surviving spouse or children or parents of firefighters, ambulance service or rescue squad members, law enforcement officers or National Guard members killed in the performance of their duties,' further providing for death benefit eligibility and for definitions," further providing for retroactivity of death benefit eligibility.