Director of National Intelligence James Clapper said terrorism has become more sophisticated and destructive as extremist groups such as the Islamic State organization increasingly use social media for their propaganda, WTOP reported Monday.

“In my 50-plus years in intelligence, I don’t know if we’ve been beset by a more diverse array of challenges and crises around the world,” Clapper told radio station host J.J. Green during an interview in December.

“Terrorists have gone to school on how we try to track them, and that’s made our job harder,” he added.

U.S. intelligence officials think the speed, adaptability and skills of modern threats pose a significant challenge to their national security efforts, Green noted.

Clapper explained during the interview that his work entails reading news clips about terrorism, counterintelligence, weapons of mass destruction, transnational organized crime, natural resources, human security and cyber issues.

He told the station that he uses a protected tablet to provide daily intelligence briefs to the U.S. president.

Maj. Gen. Dwyer Dennis, formerly director of global reach programs at the U.S. Air Force headquarters, has been appointed as the service branch’s program executive officer for command, control, communications, intelligence and networks, the Defense Department said Friday.

Dennis will be based at Air Force Materiel Command in his new assignment and was previously responsible for the branch’s airlift, air refueling, training and special operations programs.

Those programs account for a budget of $5.6 billion and include the KC-46, Presidential Airlift Replacement and Combat Rescue Helicopter, according to the Air Force.

The 33-year military veteran has held the positions of program executive officer for fighters and bombers at the Air Force Life Cycle Management Center and director of AFMC’s intelligence, surveillance, reconnaissance and requirements directorate.

He is a recipient of the Air Force Commendation Medal with oak leaf cluster, Air Force Achievement Medal and Defense Superior Service Medal with oak leaf cluster, among other honors.

Andrew McCabe, formerly associate deputy director at FBI, has been named the new deputy director of the bureau.

McCabe will succeed Mark Giuliano, who has retired after a 28-year service with the bureau, and will be responsible for FBI’s domestic and international investigative and intelligence affairs, FBI said Friday.

“Andy’s 19 years of experience, combined with his vision, judgment, and ability to communicate make him a perfect fit for this job,” said FBI Director James Comey.

McCabe started his FBI career with the New York field office in 1996, with responsibility for organized crime investigations.

He also held roles within the counterterrorism division, the national security branch and the Washington field office.

A Congress-formed commission has issued 63 recommendations after it reviewed the U.S. Army‘s structure and policies for force size management and integration efforts, the Army News Service reported Thursday.

C. Todd Lopez writes the National Commission on the Future of the Army concluded that the military service needs at least 980,000 active-duty and reserve troops in order to carry out future missions.

The eight-commissioner group also urged the branch to retain 20 Boeing-built AH-64 Apache attack helicopter battalions within its active component and another four battalions at the Army National Guard.

NCFA also identified several approaches for the design and testing of a multicomponent unit for the Army’s aviation programs as well as called on the Defense Department secretary to authorize a flexible involuntary mobilization strategy for all Army components, Lopez reports.

The commission also proposed the implementation of programs to incentivize recruiters who help enlist new soldiers and to accelerate the move towards One Army School System.