Off-world settlements will provide fuel and life support materials for space missions and planetary operations, and for return of goods to Earth.
But faster helicopters would be useful, particularly for rescue missions and military operations, so engineers are constantly looking for ways to make them.
They did so in the conviction that this extraordinary technology can and must be brought to bear so that untold thousands of their countrymen can perform dangerous combat, search and rescue, special operations and other missions in the future in greater safety and with greater likelihood of success than with helicopter alternatives.
The frigate - one of 20 being built - will mainly be deployed on escort missions and for anti-submarine operations.
Obama has shown that when the threat is most urgent he does not hesitate to act, whether it means deciding to double down in Afghanistan, increasing the number of drone and special operations missions against terrorists, getting Osama bin Laden or bringing down Moammar Gadhafi.
Obama said the troops remaining in Iraq would take on an advisory role in training and equipping Iraqi forces, supporting civilian operations in Iraq, and conducting targeted counterterrorism missions.
In future, however, an Afghan co-ordination group made up of senior army, police and intelligence officers will review and approve all special-operations missions.
Such restrictions would be undesirable at any time but particularly so at a moment when the Navy is facing severe budget cuts - cuts that will affect its presence and operations around the planet and otherwise endanger our naval forces' ability to perform their vital missions in an increasingly dangerous world.
The only missions that we are contemplating and discussing with the Afghans involves counterterrorism operations against al Qaeda, which we would need to carry out to ensure that al Qaeda cannot reestablish a safe haven in Afghanistan, and then continued training of Afghan forces.
And the study group also recommends that the United States make a fundamental change in its military operations by gradually shifting its troops from combat missions to training and advising the Iraqi army.
We gamers are familiar with endless amounts of Call of Duty-type shooters placing us in the middle of dangerous missions to take out high profile targets, and rarely do we ever hear about operations of this caliber in real life.
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However, nobody would seriously consider using a Predator to carry out most of the missions assigned to F-16s, and the U.S. has been conducting unmanned aircraft operations in Southwest Asia for a long time now.
Fourth, African nations are essential contributors both to intra-African military operations that help stabilize the African continent and also to many key UN multilateral peacekeeping missions.
The U.S. also has special operations teams conducting training missions in central Africa, where governments in Uganda, the Central African Republic and the Democratic Republic of Congo are combating the Lord's Resistance Army, a regional Islamist militia.
Alongside the training mission in Mali and significant EU contributions to United Nations missions, Brussels deploys a training and antipiracy mission in and around Somalia, a monitoring mission in Georgia and police operations in Kosovo, the Democratic Republic of Congo and Afghanistan.
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