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  2. Chalk (military) - Wikipedia

    en.wikipedia.org/wiki/Chalk_(military)

    A chalk loading onto a helicopter. In military terminology, a chalk is a group of paratroopers or other soldiers that deploy from a single aircraft. [1] A chalk often corresponds to a platoon-sized unit for air assault operations, or a company-minus-sized organization for airborne operations. For air transport operations, it can consist of up ...

  3. HK 4.6×30mm - Wikipedia

    en.wikipedia.org/wiki/HK_4.6×30mm

    The 4.6×30mm (designated as the 4,6 × 30 by the C.I.P.) [6] cartridge is a small-caliber, high-velocity, smokeless powder, rebated, bottleneck, centerfire cartridge designed for personal defense weapons (PDW) developed by German armament manufacturer Heckler & Koch (HK) in 1999.

  4. Wax bullet - Wikipedia

    en.wikipedia.org/wiki/Wax_bullet

    A wax bullet is a non-lethal projectile made of wax material — often paraffin wax or some mixture of waxes and other substances that produce the desired consistency — that mimics the external ballistics but not the terminal effects of real bullets.

  5. Speedloader - Wikipedia

    en.wikipedia.org/wiki/Speedloader

    An 1858 New Model Army black-powder cap-and-ball revolver replica. The cylinder has been removed from the frame. The modern revolver circular speedloader holds a full cylinder complement of cartridges in a secure fashion, spaced in a circular configuration so as to allow the cartridges to drop simultaneously into the cylinder easily (although non-circular types such as half moon clips are very ...

  6. USP6 - Wikipedia

    en.wikipedia.org/wiki/USP6

    9098 n/a Ensembl ENSG00000129204 n/a UniProt P35125 n/a RefSeq (mRNA) NM_001304284 NM_004505 NM_005152 n/a RefSeq (protein) NP_001291213 NP_004496 n/a Location (UCSC) Chr 17: 5.12 – 5.18 Mb n/a PubMed search n/a Wikidata View/Edit Human Ubiquitin carboxyl-terminal hydrolase 6 (USB6), also termed TRE17 and Tre-2, is a deubiquitinating enzyme that in humans is encoded by the hominid (i.e ...

  7. Armstrong's mixture - Wikipedia

    en.wikipedia.org/wiki/Armstrong's_mixture

    Armstrong's mixture is a highly shock and friction sensitive [1] explosive. Formulations vary, but one consists of 67% potassium chlorate, 27% red phosphorus, 3% sulfur, and 3% calcium carbonate. [2] [3] It is named for Sir William Armstrong, who invented it sometime prior to 1872 for use in explosive shells. [4] [additional citation(s) needed]

  8. Pyrotechnic composition - Wikipedia

    en.wikipedia.org/wiki/Pyrotechnic_composition

    A pyrotechnic composition is a substance or mixture of substances designed to produce an effect by heat, light, sound, gas/smoke or a combination of these, as a result of non-detonative self-sustaining exothermic chemical reactions. Pyrotechnic substances do not rely on oxygen from external sources to sustain the reaction.

  9. Union Pacific Big Boy - Wikipedia

    en.wikipedia.org/wiki/Union_Pacific_Big_Boy

    The team found that the railroad's goals could be achieved by enlarging the Challenger firebox to about 235 by 96 inches (5.97 m × 2.44 m) (about 150 sq ft or 14 m 2), increasing boiler pressure to 300 psi (2.1 MPa), adding four driving wheels, and reducing the size of the driving wheels from 69 to 68 in (1,753 to 1,727 mm). [6]