When the Admiral says, "We'll use a Fulton recovery of any material samples," he refers to the Skyhook System, which the US Air Force (the only operator) officially retired in 1996, due to the availability of such long range aircraft such as the MH-53 and MV-22.
The Navy SEALs investigating the blast site are shown being inserted via a HALO jump. A HALO jump requires parachutists to jump at altitudes of up to 32,000 feet and open at 2,000 feet. These jumps often take several minutes from jump to landing, but in the episode, SEALS are on the ground in less than one minute. The military would also be unlikely to use this insertion method, since long-range helicopters would be more practical.
When the letter that Frank wrote to the deceased trooper's family is shown at the end and the date of his death is shown to be Sunday, October 18. The year must be 2015 since only then was the 18th of October a Sunday, but the year can also be seen on the top of the letter, although it is not crystal clear. The episode aired on the 27th of February, 2015.