In modern warfare, overwatch is the state of one small unit or military vehicle supporting another unit, while they are executing fire and movement tactics. An overwatching, or supporting unit has taken a position where it can observe the terrain ahead, especially likely enemy positions. This allows it to provide effective covering fire for advancing friendly units. The term overwatch originates in U.S. military doctrine.

An ideal overwatch position provides cover for the unit, and unobstructed lines of fire. It may be on a height of ground or at the top of a ridge, where a vehicle may be able to adopt a hull-down position. If the overwatching unit is in a position to fire over advancing friendly units, great care must be taken not to let fire fall short. The friendly units should be within tracer burnout (the range at which tracer rounds are visible).

Overwatch can be performed by platoons during company fire and movement, by individual armoured fighting vehicles (especially tanks) or infantry sections, in platoon fire and movement, or even by fireteams or individual soldiers, in the final stages of an assault.

Peter Hayden Dinklage (born June 11, 1969) is an American film, television and theatre actor.

Since his breakout role in the 2003 film The Station Agent, he has acted in Elf, Underdog, Find Me Guilty, the 2007 film Death at a Funeral and its 2010 remake, and The Chronicles of Narnia: Prince Caspian. Since 2011 he has starred in the HBO series Game of Thrones, based on George R.R. Martin's series of novels A Song of Ice and Fire, which earned him the Emmy Award for Outstanding Supporting Actor in a Drama Series as well as the Golden Globe Award for Best Supporting Actor in a Series, Miniseries or Television Film.

Dinklage was born in Morristown, New Jersey, the son of Diane, an elementary school music teacher, and John Carl Dinklage, a retired insurance salesman. Dinklage was born with achondroplasia.

He grew up in Mendham Township, New Jersey. Dinklage graduated from Delbarton School in Morristown in 1987, pursuing his future in acting, and graduated from Bennington College in 1991.

Dinklage made his feature debut in the 1995 cult art house film Living in Oblivion playing the role of a frustrated dwarf actor complaining about his clichéd part. Dinklage's breakout role was in the 2003 award-winning film The Station Agent, his first mainstream appearance. He received Independent Spirit and Screen Actors Guild Award nominations for Best Actor for his performance in that film. That same year, he appeared in the direct-to-DVD movie Tiptoes with Gary Oldman. As well as appearing in films, Dinklage has starred multiple times in off-Broadway productions.

Lena Headey (born 3 October 1973) is an English actress. Headey's performance in a one-off show when she was 17 caught the attention of a casting agent, who took a photo and asked her to audition and eventually she got a supporting role alongside Jeremy Irons and Ethan Hawke in the 1992 British drama film Waterland and went on to appear with higher-profile actors in major films such as The Remains of the Day (1993), The Jungle Book (1994), Onegin (1999) and Aberdeen (2000).

After working steadily as an actress getting small and supporting roles in films throughout the 1990s, she found fame for her lead performances in big-budget motion pictures that became well-known like the fantasy film The Brothers Grimm (2005), in which she acted opposite Matt Damon and Heath Ledger, the action period film 300 (2007), portraying the role of Queen Gorgo and the adventure and biopic feature The Red Baron (2008).

She is known for playing the starring role Sarah Connor on Fox's television spin-off of James Cameron's popular Terminator film series Terminator: The Sarah Connor Chronicles (2008–2009). She currently appears as Cersei Lannister in HBO's television series Game of Thrones (2011), which has received universal acclaim from both critics and audience.