US explores 2,000lb JDAM-ER as winged bunker-buster for low-angle strikes

Pentagon/DTRA budget documents indicate interest in enhancing 2,000lb-class JDAM-ER (GBU-64) for hard-target defeat, potentially pairing wing kits with penetrator warheads (e.g., BLU-109) and enabling longer-range releases. The novel aspect is using a winged glide JDAM as a bunker buster, including potential shallow/near-horizontal attack profiles to hit tunnel entrances or sides of fortified structures while keeping aircraft farther from defenses.