Some diving instructors continue to teach single demand valve buddy-breathing as an obsolete but still useful technique ; then they show the method that has superseded it, since availability of two second stages per diver is now assumed in recreational scuba.

Some of the courses represent less frequently used mainstream skills ( such as " Twin-set diver ", " Full face-mask diver ", " Surface Marker Buoy " and " Advanced wreck diver " specialties ).

Some say that the large number of competitor diver training organizations, prevent PADI from realistically being accused of market abuse, while others maintain that PADI's dominant position in the industry makes such profiteering inevitable.

Some marine creatures also pose a threat to diver safety.

Some older dry suits have no vents, but the diver must lift one of the wrist seals or the neck seal open to vent the dry suit.

Some commercial dry suits are rated for hazardous-environment diving, and when combined with a full-face helmet can completely isolate and protect the diver from hazardous environments such as sewage pits and chemical storage tanks.

" Some of these dives were broadcast live on BBC radio, which must have been a quite surreal experience for both diver and audience.

Some simple oxygen rebreathers had no constant-flow valve, but only the bypass, and the diver had to operate the valve at intervals to refill the breathing bag as he used the oxygen.

Some information is only shown at the surface to avoid an information overload of the diver during the dive:

Some of these schools include but are not limited to: military free-fall ; combat diver qualification course ; survival, evasion, resistance & escape ( SERE ); jumpmaster ; pathfinder ; Combatives Instructor ; first responder / combat lifesaver ; language training ; Mountain Warfare School ; and many types of shooting, driving, and assault procedures training.

Some models require a bailout block to provide alternative breathing gas supply from the umbilical and bailout cylinder, but are not suitable for accepting an alternative air supply from a rescue diver, while a few models accept a secondary demand valve which can be plugged into an accessory port ( Draeger, Apeks and Ocean Reef ).

* Some gas panels have a separate supply gauge for each diver downstream of the supply valve, but this is not standard practice.

Some checks are critical to the safety of the diver.

Some divers accustomed to open-circuit scuba get into a habit of casually letting small amounts of water leak in between the lips and the mouthpiece and blowing it out the next time the diver exhales.

Some vocational training schools provide such training, but the current need exceeds the facilities.

Some churches have six or more training sessions of two hours each, generally held on Sunday night or during the week.

Some groups offer training courses to help cyclists integrate themselves with other traffic.

Some CERTs form a club or service corporation, and recruit volunteers to perform training on behalf of the sponsoring agency.

Some of these technologies include speech recognition software to allow computers to handle first level of customer support, text mining and natural language processing to allow better customer handling, agent training by automatic mining of best practices from past interactions, support automation and many other technologies to improve agent productivity and customer satisfaction.

Some bark quite a lot and may need training in order to stop, while others will not bark much at all.

Some students attempt distance education without proper training of the tools needed to be successful in the program.

Some training in many sub-specialties is still part of the general surgical training program.

Some general surgeons obtain advanced training and specialty certification in this field alone.

Some historians, though, are recognized by publications or training and experience.

Some of these items include providing creativity training, having leaders encourage and model innovation, allowing employees to question current procedures and rules, seeing that the implementation of innovations had real consequences, documenting innovations in a professional manner, allowing employees to have autonomy and freedom in their job roles, reducing the number of obstacles that may be in the way of innovation, and giving employees access to resources ( whether these are monetary, informational, or access to key people inside or outside of the organization ).

Some locksmiths decide to call themselves " Master Locksmiths " whether they are fully trained or not, and some training certificates appear quite authoritative.

Some grappling arts, such as aikido, use a similar method of compliant training that is equivalent to light or medium contact.

Some critics of point sparring feel that this method of training teaches habits that result in lower combat effectiveness.

Some traditional martial concepts have seen new use within modern military training.

Some heroes and villains have no powers at all but depend instead on hand-to-hand combat training or advanced technological equipment.

Some neurologists will complete voluntary, additional training in a fellowship program in order to gain experience in a subspecialty area.

Some physicists take up additional careers where their knowledge of physics can be combined with further training in other disciplines, such as patent law in industry or private practice.

( Some soldiers referred to Spam as " ham that didn't pass its physical " and " meatloaf without basic training ".

Some SR systems use " training " where an individual speaker reads sections of text into the SR system.

Some of t ' ai chi ch ' uan's training forms are especially known for being practiced at what most people categorize as slow movement.

Some private institutions also offer courses from TAFEs, however they more commonly offer other vocational education and training courses.

Some forms of capitalism do indeed work -- superb organizations, a credit to any society.

Some critics have also analyzed the use of alleged front organizations and conflicted patient " advocacy " groups funded by pharmaceutical companies that seek to set the mental health agenda, including the use of the law to force people to take antipsychotics against their will, often justified by claims about risk of violence.

Some bar associations are responsible for the regulation of the legal profession in their jurisdiction ; others are professional organizations dedicated to serving their members ; in many cases, they are both

Some atheist organizations, such as the Italian Union of Rationalist Atheists and Agnostics and the British National Secular Society, offer certificates of " debaptism ".

Some efforts have been partially effective in creating fear, due to the lack of visibility associated with modern biological weapon use by small organizations.

Some people and organizations use the term camel case only for lower camel case.

Some Jewish organizations have described evangelism and missionary activity directed specifically at Jews as antisemitic.

Some organizations cater exclusively to homosexual Christians who do not want to have gay sex, or attraction ; the goals of these organizations vary.

Some market organizations may give rise to inefficiencies associated with uncertainty.

" Some creationists and creationist organizations, such as the Institute of Creation Research, use these terms in an effort to make it appear that evolutionary biology is a form of secular religion.

Some organizations ( e. g. the Assyrian Church of the East ), though aloof from the political wranglings of imperial Christianity, nevertheless also practiced episcopal polity.

Some resemble the old U. S. conservation movement-whose modern expression is the Nature Conservancy, Audubon Society and National Geographic Society-American organizations with a worldwide influence.

Some of the ritual traditions of the guilds were conserved in order organizations such as the Freemasons, alleging deriving from the Masons Guild.

Some Islamic organizations cite it in support of the Islamic view of Jesus.

Some Muslim religious organizations cite this work in support of the Islamic view of Jesus ; in particular, the Islamic apologists Rashid Rida in Egypt and Sayyid Abul Ala Maududi in Pakistan gave it qualified acceptance.

Some are related to the many international organizations as the International Red Cross and Red Crescent Museum or the Microcosm in the CERN area.

Some countries, such as Australia, Canada, and the UK, authorize non-partisan organizations to set constituency boundaries in an attempt to prevent gerrymandering.

Some are more general in scope ( the United Nations ) while others may have subject-specific missions ( such as Interpol or the International Organization for Standardization and other standards organizations ).

Some organizations, such as NATO, have collective security or mutual defense provisions.

Some organizations such as online commons ( such as Wikipedia, the Wikimedia Commons ), wikis and Indymedia are held up as examples of functioning anarcho-communistic organizations.

Some governments and organizations are now considering, or have already implemented, full cutoff fixtures in street lamps and stadium lighting.

Some organizations have experimented with other methods ( such as employee-voting models ) of selecting or reviewing managers ; but this occurs only very rarely.

Some ( in many cases, equally notable ) organizations.