instruction:
Given a document, find the main entity about whom the author is writing. Write the full name if mentioned in the text. Note that URLs in the text have been replaced with [Link].
question:
"I'm still kind of in shock " says Edward Geist  a researcher specializing in Russia at the Rand Corp. "My guess is they're not bluffing  that they've flight-tested this thing. But that's incredible."
The U.S. did go on to investigate the idea of a nuclear-powered missile   Geist  says. Known as the Supersonic Low Altitude Missile  the idea was more like a nuclear-powered drone aircraft. "It was actually supposed to fly around autonomously and drop nuclear gravity bombs "  Geist  says.
The nuclear reactor that would keep SLAM aloft would also spew radioactive exhaust   Geist  says. At the time  that was advertised as a feature  not a bug  because it would have had the added benefit of polluting the Soviet countryside.
"It was supposed to be really  really dirty "  Geist  says.
The U.S. got as far as actually building the nuclear engine for Project Pluto  a development project at the Nevada Test Site. The reactor was tested a number of times in the early 1960s  and it performed well. But by that point  awareness had grown about the dangers of nuclear fallout  and arms control treaties were coming into place   Geist  says. Those concerns were among the reasons the project died in 1964.
The type of reactor used in Project Pluto was particularly messy because it exposed the nuclear fuel directly to the outside air.  Geist  says the new Russian missile may use a different system that keeps the fuel somewhat isolated from the air. But   he  quickly adds  that wouldn't make it safe.
"There are a bunch of different ways to do it  and frankly  they're all terrible "  Geist  says.
 He  suspects that the Russian design would involve what's known as a "fast reactor " which is more efficient  but also less safe  than most nuclear reactors. If the missile crashed or the reactor failed  it would trigger a major incident.
"It's just crazy they field-tested this thing "  he  says.
 Geist  says  he  expects Russia's provocations to continue. "They're sending us a message that they are not OK with our U.S. missile defense posture "  he  says.
That message? "They're willing to go full Strangelove on us "  Geist  says.
answer:
Edward Geist


question:
Sep 26  2017; Jersey City  NJ  USA; U.S. Team assistant captain Tiger Woods during The Presidents Cup golf tournament at Liberty National Golf Course. Mandatory Credit: Bill Streicher-USA TODAY Sports
JERSEY CITY  New Jersey (Reuters)  - Tiger Woods  said  he  was âoptimisticâ about  his  golfing future while at the same time publicly acknowledging what has been obvious for some time  that  he  might never return to competitive golf.
The American former world number one won the last of  his  14 major titles in 2008 and the 41-year-old has only played six competitive rounds in the past two years while trying to recover from multiple back surgeries.
âYeah  definitely. I donât know what my future holds for me â  he  said on Wednesday on the eve of the Presidents Cup when asked whether there was a scenario that would not allow  him  to compete again.
âI donât know what 100 percent (healthy) means after eight surgeries  but Iâll try and get as close as I can to that number â  Woods  added.
 Woods  was peppered with questions during a news conference with his three assistant Presidents Cup captains and the four International assistants  who often looked bored at the focus stayed on the second most prolific major champion of all time.
Sep 26  2017; Jersey City  NJ  USA;  U.S. Team assistant captain Tiger Woods  during The Presidents Cup golf tournament at Liberty National Golf Course. Mandatory Credit: Bill Streicher-USA TODAY Sports
 Woods  seemed destined to become the most prolific major winner of all time when he won the 2008 U.S. Open  moving within four titles of the record of 18 held by Jack Nicklaus.
answer:
Tiger Woods


question:
Because of space limitations in the minor-league clubhouse of the Metsâ spring-training complex  meetings are often held in the weight room at the start of camp. Now  as major league players on the opposite side of the complex  pitchers and catchers gathered in the weight room at First Data Field on Wednesday to receive instructions from  new manager Mickey Callaway  and pitching coach Dave Eiland before the first spring workout.
 The 42-year-old Callaway  who is running a spring camp for the first time in his major league career  â his previous experience came as Indians pitching coach for five seasons â called the session a discussion about âroutinesâ and âprocesses.â Among them  ensuring each pitcher understands how many bullpen and live batting practice sessions he must throw before getting to pitch in the Grapefruit League.
 Callaway  will convene his entire team for a meeting Monday that will precede the initial full-squad workout.
âIt will be a little different â  Callaway  said. âWe are going to get more in depth about the things we want to see out of our team and the expectations that we have  so I am really excited about that meeting. Itâs my chance to address everybody in the organization basically and for guys to get a chance to see everybody in the organization and not just the guys on the field. â
âThey become an integral part of what weâre trying to do and they help us in our routines and processes â  Callaway  said. âSo [players] have got to make sure they are on top of their games because thereâs a lot of responsibilities throughout the day and itâs not always about come here  do your prep work and go out on the field and perform.â
Jacob deGrom was asked if he expects  Callaway  to run a tight ship.
The fact  Callaway  has such a deep pitching background is something Lugo already has come to appreciate. The right-hander mentioned a recent bullpen session  Callaway  was watching that turned into an instructional moment.
But  Callaway  is quick to point out that any instruction  he  provides to pitchers will be coordinated with Eiland to ensure both are sending the same message.
â[ Callaway ] and Dave have a lot of knowledge  so  Mickey  told us if we have a question for  him  we can ask  him   but Dave is going to know about it â Zack Wheeler said. âThey are working together. I think they both accept each other and work well.â
answer:

Mickey Callaway