User blog comment:Protostealth/AceNews - Dec. 05, 2011/@comment-4503347-20111206075459

New skills will also be included in this pack. They include Quick Respawn+, Sharpshooter (a small chance where a lethal machinegun maybe shot), and Defender (significantly increases HP/defence & ECM coverage). Just like the iDOLM@STER skins they will also be available as a pack together for a slightly lower price rather than buying them all individually. The Apache, Rafale, F-35, and A-10 skins will have such pack as well.

http://ah.acecombat.jp/dlc/dlc005.html