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Two days after Navy jets crashed in the Pacific, the result of an apparent mid-air collision, one of the pilots remains missing. Navy officials have yet to reveal any details about the accident involving two F/A-18C Hornet fighters.

The Pentagon should join the battle against the illegal wildlife trade amid evidence that terror groups are profiting from poaching, the former head of US Africa Command said at a Capitol Hill briefing.

Two US Navy F/A-18C Hornet fighter jets crash into Pacific while on a training flight, the result of an apparent mid-air collision. One pilot was rescued, but the other has not been found.

The US military 'is ready to conduct direct action against ISIL targets in Syria,' said a senior defense official Thursday.

On Tuesday, the Senate weighed police use of military hardware provided for free by the Pentagon. The program, known as 1033, came to national attention in the wake of the Ferguson protests.

Many have argued that the Islamic State now represents a far greater prospect of peril to US interests than Al Qaeda does. But experts see differences between IS and the Al Qaeda of pre-9/11.

US officials have promised that the military airstrikes will not abate. President Obama said Wednesday that Islamic State brutality toward American journalists will only strengthen US resolve to fight the group.

Pentagon war-gamers are looking ahead to how war will evolve. It’s likely to be fought in megacities where resources are being fought over and enemies could be aided by bio and nanotech advances.

Douglas McAuthur McCain, who was killed while battling rebel forces in a Syrian suburb, made it clear on social media that he found camaraderie and a sense of conviction in the Islamic State.

Senior US military officials have been increasingly vocal about the need to treat the Islamic State as a regional threat, which could involve US military action in Syria.

The Pentagon is pushing back against the notion that their 1033 program is 'militarizing' local police forces. But officers there acknowledge that some police departments have misused some equipment more suited for combat.

US intelligence officials still know relatively little about the workings of Islamic State militants. James Foley may have been traded by insurgent groups before ending up in IS hands, which complicates the intelligence picture.

President Obama said he hoped that the role of the National Guard would be limited, and suggested that local police departments reexamine their use of heavy military equipment when confronting protesters.

US troops sent to Iraq to assess the humanitarian relief operation are coming home, but that's not necessarily the end of US military operations there, Pentagon officials say.

The deployment of 130 additional US troops brings to more than 1,000 in Iraq. Pentagon officials say they are not there to fight, but that ground troops may be needed to rescue the Yazidis.

To protect Iraqi civilians, the US has struck Islamic State positions. In response, the militants – including foreign fighters, some of them Westerners – are threatening the US itself.

US operations against Islamic State (IS) fighters are 'limited in scope to protect US citizens and facilities' and are 'unlikely to affect' their advances in Iraq, a top Pentagon official says.

Obama sought to reassure Americans that the attacks in northern Iraq would not lead to another US war. But the air strikes will have limited impact against the dispersed militants without ground-based personnel, some analysts say.

Retired Gen. Stanley McChrystal, forced to step down after published remarks critical of the president, endorsed former Marine Seth Moulton for a US House race – prompting speculation that he's open to run himself.

Pentagon officials insist that the death of the highest-ranking US officer in America’s post-9/11 war effort will not change US strategy in Afghanistan. Mission No. 1 is to train Afghan counterparts ahead of US combat forces leaving.