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Ambassador Tina Kaidanow. Photo: Jim Watson/AFP via Getty Images

Ambassador Tina Kaidanow, senior adviser for international cooperation, has left the Pentagon, the Department of Defense confirmed to Defense News Wednesday.

Why it matters: She's the fifth top official in seven days to exit or announce their departure from the Pentagon, according to Defense News and The Hill.

The big picture: Per the two news outlets, Kaidanow left her role on Dec. 16. It was announced on Dec. 12 that Randall Schriver, the top Asia policy official, would leave his position soon. A day later, Jimmy Stewart, the acting undersecretary of defense for personnel and readiness, said he was retiring.

  • Steven Walker, head of the Defense Advanced Research Projects Agency, will leave in January "for an industry job," Defense News reported Tuesday.
  • Earlier Wednesday, the Defense Department confirmed to the military news outlet that Kari Bingen, principal deputy undersecretary of defense for intelligence, would step down next month.

What they're saying: A Department of Defense spokesperson told The Hill the service of long-time official Kaidanow was appreciated and he wishes her well.

  • DOD spokesperson Lt. Col. Michael Andrews told Defense News the department was "committed to the development and implementation of international cooperative programs and defense exportability efforts to foster cooperation with U.S. allies on research, development, production and support of weapons systems and related equipment."
  • "The department will not provide anything further on this personnel matter," Andrews added.

Go deeper: Every high-profile Trump administration departure

Go deeper

Dion Rabouin, author of Markets
18 mins ago - Economy & Business

2021's expected earnings blowout begins

JPMorgan CEO Jamie Dimon. Photo: Mark Kauzlarich/Bloomberg via Getty Images

First-quarter earnings so far have been very strong, outpacing even the rosy expectations from Wall Street and that's a trend that's expected to continue for all of 2021. S&P 500 companies are on pace for one of the best quarters of positive earnings surprises on record, according to FactSet.

Why it matters: The results show that not only has the earnings recession ended for U.S. companies, but firms are performing better than expected and the economy may be justifying all the hype.

18 mins ago - Science

NASA's Mars helicopter takes flight as first aircraft piloted on another planet

Ingenuity on the surface of Mars, filmed by NASA's Perseverance rover. Photo: NASA Jet Propulsion Laboratory

NASA successfully piloted the Ingenuity Mars helicopter for its first experimental flight on Monday, briefly hopping the aircraft as NASA's Perseverance rover collected data.

Why it matters: Ingenuity's short flight marks the first time a human-built aircraft has flown on a world other than Earth, opening the door to new means of exploring planets far from our own.

All U.S. adults now eligible for COVID-19 vaccine

Healthcare workers getting COVID-19 vaccines on Dec. 16, 2020 in Portland, Oregon. Photo: Paula Bronstein/Getty Images

All 50 U.S. states, plus Washington, D.C. and Puerto Rico, have made U.S. adults over the age of 16 eligible for COVID-19 vaccines, meeting President Biden's April 19 deadline.

Why it matters: The landmark speaks to the increased pace of the national vaccination campaign, but will increase pressure on the federal government, states and pharmaceutical companies to provide adequate vaccine supply and logistics.

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